Style A has a side-opening urethral opening. Style B has no urethral opening.
Style A:95% Rayon, 5% Spandex.Made from Bamboo Rayon--a kind of cellulose fiber extracted from bamboo. It is featured with good air permeability, instant moisture-wicking, and lightweight and stable dyeing property.
Style B:92% Micro Modal,8% Spandex.Ultra-soft micro modal fabric for men's underwear feels cool on the skin and silky to the touch. Comfortable underwear for men feels silky to the touch like a second skin.
3D Contour Pouch Design: David Archy's pouch underwear for men gives more room for holding the boys well in place.
No riding up: 6.5 inches leg length can avoid the men's pouch briefs riding up for daily wearing no matter sitting in the office, taking a walk, or jogging.