The KUHL Men's Mutiny™ River Short reinvents the swimming short by incorporating revolutionary technical innovations and design features. 4-way stretch nylon provides unrestricted movement at the side panels. The front and back fabric panels are a 3-D textured non-stretch nylon which lifts the fabric from the skin, reduces chafe, and speeds dry time. Combined with DWR, you have a speed drying engineered fit swim short. The innovations don't stop there. For added comfort, KUHL adds a woven peached microfiber on the inside waistband and engineered a secure anatomical fit for heavy white water or rough surf. Rash Guard™ Inseams are flat felt that is finished for smooth soft surface next to the skin to eliminate rash. The Rash Guard™ Inseams are also moved forward to prevent friction (see photos showing side view). A key loop inside the right zippered, self-draining pocket secures your belongings in and out of the water.