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. 
MATERIALS & CARE:
 - 47%viscose, 47%cotton, 6% spandex.   
 - Machine wash cold, tumble dry low.
 - Note: O-ring is not included in underwear.