TRUHK Boxer STP/Packing Underwear - Black Size:XS 4-in-1 prosthetic is designed as

4-in-1 prosthetic is designed as a Pack & Play STP

Most Versatile Formula

comfortable fit

Made from silky smooth

TRUHK Boxer STP/Packing Underwear - Black Size:XS 4-in-1 prosthetic is designed asTake 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):