STP Underwear
With front openings, and extra support for your STP, this collection of underwear was designed with STPs in mind!
47 products
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47 products
One pair of TRUHK Boxer packing underwear in Black plus one SoReal 4.5" Milo silicone STP in the skin tone you pick. Everything you need to pack and pee standing up, in one box, for less than buying them separately.
New to this? Here is the short version. An STP (short for stand to pee) is a soft silicone piece with a hollow cup at the back. You hold the cup against your body, and it funnels pee out through the shaft, so you can use a urinal or stand at a toilet. When you are not in the bathroom it doubles as a packer, meaning it sits in your underwear and gives you a natural looking bulge. Milo does both.
Why these two go together. Regular underwear has nowhere to hold an STP, so it shifts around and is a hassle to get out when you need it. The TRUHK Boxer has a built in pocket system that holds Milo exactly where you want it, plus an opening in the front so you can pull it out to pee without dropping your pants. Milo has a 4.5 inch shaft, and this boxer is designed for anything up to 5.5 inches, so it is a comfortable fit with room to move.
How the TRUHK Boxer holds your STP. The front of the boxer has three layers:
Layer 1 (inside pocket): Tuck the cup of the STP in here so it stays put.
Layer 2 (center panel): A round opening you pull the shaft through, which keeps the STP from turning.
Layer 3 (outside pouch): A shaped front pouch with room for the shaft, so it hangs naturally. The horizontal opening across the front lets you reach in when nature calls.
The boxer is super soft bamboo (95% bamboo, 5% spandex), stretchy, with a 6 inch inseam, and sized like traditional men's underwear. Machine wash cold, tumble dry low.
About Milo. A realistic STP with a painted tip and veins, made from high quality silicone. The contoured lip sits comfortably against your body and the compact cup keeps the bulk down for discreet daily wear, while still being sturdy enough for a stable, reliable pee. The wide shaft and opening are shaped for good flow. Inside the shaft are ridges that add texture and stimulation. Milo can also be used for play by adding an erection rod (sold separately), which slides in deep enough to leave the ridges uncovered. Use a little water based lube for easy insertion.
Milo dimensions: 4.5" shaft length, 4" shaft length underneath, 6" total base length, 3" ball width.
Care: Rinse after use when you can, and wash daily with mild soap and warm water or a toy cleaner. Let it air dry before the next use.
How to order: Choose your boxer size (men's sizing) and your STP color. Milo is one size. Available in Vanilla, Caramel, Mocha, and Chocolate.
One pair of TRUHK Brief packing underwear in Black plus one SoReal 4.5" Milo silicone STP in the skin tone you pick. Everything you need to pack and pee standing up, in one box, for less than buying them separately.
New to this? Here is the short version. An STP (short for stand to pee) is a soft silicone piece with a hollow cup at the back. You hold the cup against your body, and it funnels pee out through the shaft, so you can use a urinal or stand at a toilet. When you are not in the bathroom it doubles as a packer, meaning it sits in your underwear and gives you a natural looking bulge. Milo does both.
Why these two go together. Regular underwear has nowhere to hold an STP, so it shifts around and is a hassle to get out when you need it. The TRUHK Brief has a built in pocket system that holds Milo exactly where you want it, plus an opening in the front so you can pull it out to pee without dropping your pants. The Brief is the most forgiving TRUHK style, so if you are not sure which underwear to start with, this is the safe pick. It fits everything from Milo up to much larger STPs.
How the TRUHK Brief holds your STP. The front of the brief has three layers:
Layer 1 (inside pocket): Tuck the cup of the STP in here so it stays put.
Layer 2 (center panel): A round opening you pull the shaft through, which keeps the STP from turning.
Layer 3 (outside pouch): A shaped front pouch with room for the shaft, so it hangs naturally. The horizontal opening across the front lets you reach in when nature calls.
The brief is super soft bamboo (95% bamboo, 5% spandex), stretchy, and sized like traditional men's underwear. Machine wash cold, tumble dry low.
About Milo. A realistic STP with a painted tip and veins, made from high quality silicone. The contoured lip sits comfortably against your body and the compact cup keeps the bulk down for discreet daily wear, while still being sturdy enough for a stable, reliable pee. The wide shaft and opening are shaped for good flow. Inside the shaft are ridges that add texture and stimulation. Milo can also be used for play by adding an erection rod (sold separately), which slides in deep enough to leave the ridges uncovered. Use a little water based lube for easy insertion.
Milo dimensions: 4.5" shaft length, 4" shaft length underneath, 6" total base length, 3" ball width.
Care: Rinse after use when you can, and wash daily with mild soap and warm water or a toy cleaner. Let it air dry before the next use.
How to order: Choose your brief size (men's sizing) and your STP color. Milo is one size. Available in Vanilla, Caramel, Mocha, and Chocolate.
One TRUHK Hybrid Boxer set in Black (that is two pieces: a jock and a boxer) plus one SoReal 4.5" Milo silicone STP in the skin tone you pick. Everything you need to pack and pee standing up, in one box, for less than buying them separately.
New to this? Here is the short version. An STP (short for stand to pee) is a soft silicone piece with a hollow cup at the back. You hold the cup against your body, and it funnels pee out through the shaft, so you can use a urinal or stand at a toilet. When you are not in the bathroom it doubles as a packer, meaning it sits in your underwear and gives you a natural looking bulge. Milo does both.
What makes the Hybrid different. Most packing underwear has the pocket sewn into the underwear itself. The Hybrid splits the job into two pieces:
Piece 1 (the STP jock): A minimal jockstrap with a stretchy sling pocket that holds the cup of the STP snug against your body. The sling has an elastic trim, so it stretches to fit different STP sizes, and you can wear the cup inside or outside the pocket, whichever feels right.
Piece 2 (the boxer): A super soft bamboo TRUHK boxer that pulls on over the jock. It has an opening on the side, so when you need to pee you reach in and bring Milo out without pulling anything down.
Because the jock is doing the holding, the boxer stays light and comfortable, and the whole setup moves with you instead of tugging. If you already love how a TRUHK boxer fits but want extra stability, this is the one.
Both pieces are 95% bamboo, 5% spandex, sized like traditional men's underwear. Machine wash cold, tumble dry low.
About Milo. A realistic STP with a painted tip and veins, made from high quality silicone. The contoured lip sits comfortably against your body and the compact cup keeps the bulk down for discreet daily wear, while still being sturdy enough for a stable, reliable pee. The wide shaft and opening are shaped for good flow. Inside the shaft are ridges that add texture and stimulation. Milo can also be used for play by adding an erection rod (sold separately), which slides in deep enough to leave the ridges uncovered. Use a little water based lube for easy insertion.
Milo dimensions: 4.5" shaft length, 4" shaft length underneath, 6" total base length, 3" ball width.
Care: Rinse after use when you can, and wash daily with mild soap and warm water or a toy cleaner. Let it air dry before the next use.
How to order: Choose your size (men's sizing; the jock and boxer come in the same size) and your STP color. Milo is one size. Available in Vanilla, Caramel, Mocha, and Chocolate.
Three pairs of our original TRUHK Boxer in solid black. Stock up and save.
Take the guesswork out of matching your STP and packers with underwear. TRUHKS are designed to mix and match with ease.
Based on traditional men's sizing, these super soft bamboo underwear have a unique 3 layer pocket to securely hold your STP or soft packer in place.
Layer 1 (Interior pocket): Securely tuck in your STP or packer.
Layer 2 (Center panel): O-opening to pull the shaft through and keep your STP or packer from turning.
Layer 3 (Exterior pocket): The contour pouch has room to tuck the shaft, giving a natural hang. The open horizontal front pouch gives you access when nature calls.
3-Pack Includes:
- 3 Solid Black
Which TRUHK is right for your packer or STP? This style works best with packers and STPs that have a shaft length of 5.5 inches or less. If yours is longer than 5.5 inches, like the Hard Line Dominator, pair it with the TRUHK Button Fly Boxer, which is built to give a longer shaft room.
MATERIALS & CARE:
- 95% bamboo, 5% spandex.
- Machine wash cold, tumble dry low.
- Note: O-ring is not included in underwear.
- 6" Inseam.
Two pairs of our original TRUHK Boxer in solid black. Stock up and save.
Take the guesswork out of matching your STP and packers with underwear. TRUHKS are designed to mix and match with ease.
Based on traditional men's sizing, these super soft bamboo underwear have a unique 3 layer pocket to securely hold your STP or soft packer in place.
Layer 1 (Interior pocket): Securely tuck in your STP or packer.
Layer 2 (Center panel): O-opening to pull the shaft through and keep your STP or packer from turning.
Layer 3 (Exterior pocket): The contour pouch has room to tuck the shaft, giving a natural hang. The open horizontal front pouch gives you access when nature calls.
2-Pack Includes:
- 2 Solid Black
Which TRUHK is right for your packer or STP? This style works best with packers and STPs that have a shaft length of 5.5 inches or less. If yours is longer than 5.5 inches, like the Hard Line Dominator, pair it with the TRUHK Button Fly Boxer, which is built to give a longer shaft room.
MATERIALS & CARE:
- 95% bamboo, 5% spandex.
- Machine wash cold, tumble dry low.
- Note: O-ring is not included in underwear.
- 6" Inseam.
This STP Sport Jock Underwear was developed by request for use with stand to pee devices (not designed for packers). It features a sewn "O" front that will hold your shaft in place with a split interior for easy access to your equipment.
Made of a soft sport poly blend, the fabric jock leg bands don't pull and bind like elastic. The 1.75 inch waistband gives sturdy support and adjustability.
TIP: If you need a smaller hole for a smaller shaft, simply use a needle & thread to sew the "O" opening to desired size.
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- Sewn "O" front.
- Split (fold-over) interior.
- Quick dry fabric.MATERIALS & CARE:
- 90% Polyester, 10% Spandex.
- Machine wash cold, tumble dry low.
(Fabric not pre-washed ~ Use care when wearing with light color materials. Light colors can absorb darker color. Be sure to test material absorption with an older packer before use.)
This STP Sport Jock Underwear was developed by request for use with stand to pee devices (not designed for packers). It features a sewn "O" front that will hold your shaft in place with a split interior for easy access to your equipment.
Made of a soft sport nylon blend, the fabric jock leg bands don't pull and bind like elastic. The 1.75 inch waistband gives sturdy support and adjustability.
TIP: If you need a smaller hole for a smaller shaft, simply use a needle & thread to sew the "O" opening to desired size.
Features:
- Sewn "O" front.
- Split (fold-over) interior.
- Quick dry fabric.
MATERIALS & CARE:
- 86% Nylon, 14% Elastane.
- Machine wash cold, tumble dry low.
Take the guesswork out of matching your STP and underwear with the STP Sport Jock and SoReal Moby STP Package.
The STP Sport Jock was developed by request for use with stand to pee devices. It features a sewn "O" front that holds your shaft in place with a split interior for easy access to your equipment. Made of a soft sport nylon blend, the fabric leg bands don't pull and bind like elastic, and the 1.75 inch waistband gives sturdy support and adjustability.
TIP: If you need a smaller hole for a smaller shaft, simply use a needle and thread to sew the "O" opening to desired size.
Package Includes: 1 Silver STP Sport Jock and 1 SoReal Moby STP in your choice of color
The SoReal Moby STP/Packer was designed to be realistic, comfortable, and easy to use and pack with. It features a wide funnel for ease of use and has a very comfortable cup for all day wear.
SoReal Moby STP Features:
- Super Realistic: Realistic detailing with veins in the shaft and bumps in the skin. Made of premium soft silicone that is pleasant to the touch and heats up quickly to body temperature.
- Easy and comfortable to use: The hollow balls act as the funnel cup for the STP and have soft edges to prevent spills. Rinse after use (if possible) and wash with mild soap and warm water or a toy cleaner daily.
- Play: Moby has soft ribbed nubs inside the cup for your pleasure. Make erect by inserting an Erection Rod.
- Safe: Made of durable, high quality, premium silicone.
Dimensions: 5.75" Top of Shaft / 5.25" Under Shaft / 9" Total Length
MATERIALS & CARE (jock):
- 86% Nylon, 14% Elastane.
- Machine wash cold, tumble dry low.
Take the guesswork out of matching your STP and underwear with the STP Sport Jock and SoReal Ultimate STP Package.
The STP Sport Jock was developed by request for use with stand to pee devices. It features a sewn "O" front that holds your shaft in place with a split interior for easy access to your equipment. Made of a soft sport nylon blend, the fabric leg bands don't pull and bind like elastic, and the 1.75 inch waistband gives sturdy support and adjustability.
TIP: If you need a smaller hole for a smaller shaft, simply use a needle and thread to sew the "O" opening to desired size.
Package Includes: 1 Silver STP Sport Jock and 1 SoReal Ultimate STP in your choice of color
The SoReal Ultimate STP/Packer was created to be realistic, comfortable, and easy to use and pack with. Modeled after the best selling Ultimate Pack and Play, it features a wide funnel for easy peeing and has a comfortable cup shape.
SoReal Ultimate STP Features:
- Super Realistic: Realistic detailing with veins in the shaft and bumps in the skin. Made of premium soft silicone that is pleasant to the touch and heats up quickly to body temperature.
- Easy and comfortable to use: The hollow balls act as the funnel cup for the STP and have soft edges to prevent spills. Rinse after use (if possible) and wash with mild soap and warm water or a toy cleaner daily.
- Play: Ultimate STP has soft ribbed nubs inside the cup for your pleasure. Make erect by inserting an Erection Rod.
- Safe: Made of durable, high quality, premium silicone.
Dimensions: 6" Top of Shaft / 5.5" Under Shaft / 7" Total Length / 3" Cup Opening / 1.6" Diameter / 6" Cup Total Length
How to Use: Like all STPs, a bit of practice is needed to get comfortable with peeing using the Ultimate STP. Practice at home in the shower first to learn how to position the ball funnel cup base against you to create the proper seal. To avoid spillage, lean forward a little with slightly spread legs while urinating.
MATERIALS & CARE (jock):
- 86% Nylon, 14% Elastane.
- Machine wash cold, tumble dry low.
Take the guesswork out of matching your STP and packers with underwear. TRUHKS are designed to mix and match with ease.
Based on traditional men's sizing, these super soft bamboo underwear have a unique 3 layer pocket to securely hold your STP/soft packer in place.
Layer 1 (Interior pocket): Securely tuck in your STP/packer.
Layer 2 (Center panel): O-opening to pull the shaft through and keep your STP/packer from turning.
Layer 3 (Exterior pocket): The contour pouch has room to tuck the shaft giving a natural hang. The open horizontal front pouch gives you access when nature calls.
Which TRUHK is right for your packer or STP? This style works best with packers and STPs that have a shaft length of 5.5 inches or less. If yours is longer than 5.5 inches, like the Hard Line Dominator, pair it with the TRUHK Button Fly Boxer, which is built to give a longer shaft room.
MATERIALS & CARE:
- 95% bamboo, 5% spandex.
- Machine wash cold, tumble dry low.
- Note: O-ring is not included in underwear.
- 6" Inseam.
Take the guesswork out of matching your STP and packers with underwear. TRUHKS are designed to mix and match with ease.
Based on traditional men's sizing, these super soft bamboo underwear have a unique 3 layer pocket to securely hold your STP/soft packer in place.
Layer 1 (Interior pocket): Securely tuck in your STP/packer.
Layer 2 (Center panel): O-opening to pull the shaft through and keep your STP/packer from turning.
Layer 3 (Exterior pocket): The contour pouch has room to tuck the shaft giving a natural hang. The open horizontal front pouch gives you access when nature calls.
Which TRUHK is right for your packer or STP? This style works best with packers and STPs that have a shaft length of 5.5 inches or less. If yours is longer than 5.5 inches, like the Hard Line Dominator, pair it with the TRUHK Button Fly Boxer, which is built to give a longer shaft room.
MATERIALS & CARE:
- 95% bamboo, 5% spandex.
- Machine wash cold, tumble dry low.
- Note: O-ring is not included in underwear.
- 6" Inseam.
Take the guesswork out of matching your STP and packers with underwear. TRUHKS are designed to mix and match with ease.
Based on traditional men's sizing, these super soft bamboo underwear have a unique 3 layer pocket to securely hold your STP/soft packer in place.
Layer 1 (Interior pocket): Securely tuck in your STP/packer.
Layer 2 (Center panel): O-opening to pull the shaft through and keep your STP/packer from turning.
Layer 3 (Exterior pocket): The contour pouch has room to tuck the shaft giving a natural hang. The open horizontal front pouch gives you access when nature calls.
Which TRUHK is right for your packer or STP? This style works best with packers and STPs that have a shaft length of 5.5 inches or less. If yours is longer than 5.5 inches, like the Hard Line Dominator, pair it with the TRUHK Button Fly Boxer, which is built to give a longer shaft room.
MATERIALS & CARE:
- 95% bamboo, 5% spandex.
- Machine wash cold, tumble dry low.
- Note: O-ring is not included in underwear.
- 6" Inseam.
Take the guesswork out of matching your STP and packers with underwear. TRUHKS are designed to mix and match with ease.
Based on traditional men's sizing, these super soft bamboo underwear have a unique 3 layer pocket to securely hold your STP/soft packer in place.
Layer 1 (Interior pocket): Securely tuck in your STP/packer.
Layer 2 (Center panel): O-opening to pull the shaft through and keep your STP/packer from turning.
Layer 3 (Exterior pocket): The contour pouch has room to tuck the shaft giving a natural hang. The open horizontal front pouch gives you access when nature calls.
Which TRUHK is right for your packer or STP? This style works best with packers and STPs that have a shaft length of 5.5 inches or less. If yours is longer than 5.5 inches, like the Hard Line Dominator, pair it with the TRUHK Button Fly Boxer, which is built to give a longer shaft room.
MATERIALS & CARE:
- 95% bamboo, 5% spandex.
- Machine wash cold, tumble dry low.
- Note: O-ring is not included in underwear.
- 6" Inseam.
Take the guesswork out of matching your STP and packers with underwear. TRUHKS are designed to mix and match with ease.
Based on traditional men's sizing, these super soft bamboo underwear have a unique 3 layer pocket to securely hold your STP/soft packer in place.
Layer 1 (Interior pocket): Securely tuck in your STP/packer.
Layer 2 (Center panel): O-opening to pull the shaft through and keep your STP/packer from turning.
Layer 3 (Exterior pocket): The contour pouch has room to tuck the shaft giving a natural hang. The open horizontal front pouch gives you access when nature calls.
Which TRUHK is right for your packer or STP? This style works best with packers and STPs that have a shaft length of 5.5 inches or less. If yours is longer than 5.5 inches, like the Hard Line Dominator, pair it with the TRUHK Button Fly Boxer, which is built to give a longer shaft room.
MATERIALS & CARE:
- 95% bamboo, 5% spandex.
- Machine wash cold, tumble dry low.
- Note: O-ring is not included in underwear.
- 6" Inseam.
Take the guesswork out of matching your STP and packers with underwear. TRUHKS are designed to mix and match with ease.
Based on traditional men's sizing, these super soft bamboo underwear have a unique 3 layer pocket to securely hold your STP/soft packer in place.
Layer 1 (Interior pocket): Securely tuck in your STP/packer.
Layer 2 (Center panel): O-opening to pull the shaft through and keep your STP/packer from turning.
Layer 3 (Exterior pocket): The contour pouch has room to tuck the shaft giving a natural hang. The open horizontal front pouch gives you access when nature calls.
Which TRUHK is right for your packer or STP? This style works best with packers and STPs that have a shaft length of 5.5 inches or less. If yours is longer than 5.5 inches, like the Hard Line Dominator, pair it with the TRUHK Button Fly Boxer, which is built to give a longer shaft room.
MATERIALS & CARE:
- 95% bamboo, 5% spandex.
- Machine wash cold, tumble dry low.
- Note: O-ring is not included in underwear.
- 6" Inseam.
Take the guesswork out of matching your STP and packers with underwear. TRUHKS are designed to mix and match with ease.
Based on traditional men's sizing, the TRUHK Brief STP/Packing Underwear has a unique 3 layer pocket to securely hold your STP/soft packer in place.
Layer 1 (Interior pocket): Securely tuck in your STP/packer.
Layer 2 (Center panel): O-opening to pull the shaft through and keep your STP/packer from turning.
Layer 3 (Exterior pocket): The contour pouch has room to tuck the shaft giving a natural hang. The open horizontal front pouch gives you access when nature calls.
Which TRUHK is right for your packer or STP? The TRUHK Brief is the most universal of the TRUHK styles. It works with everything from the SoReal Mark Two to the much larger 8 inch Hard Line Dominator.
MATERIALS & CARE:
- 95% bamboo, 5% spandex.
- Machine wash cold, tumble dry low.
- Note: O-ring is not included in underwear.