ATD Men's Summit Baggy Mountain Bike Shorts (Shell) Nylon/Polyester/Spandex Machine wash cold, hang dry Baggy outer shell (no padded liner included) with several pockets for stashing all that you need on the trail Seamless, ventilated mesh panels in crotch to aid breathability Adult Sizes: Small (28-30); Medium (31-33); Large (34-36); X-Large (37-40); XX-Large (41-43); 3XL (44-46); 4XL (47-50); 5XL (51-53) Rugged 4-ply nylon fabric with polyester mesh panel in the back and in crotch, elastic waistband has adjustable side buckles to dial in your proper fit 3M reflective tabs