The upper side pockets are designed to guard the zipper pulls; Comes with carabiner loops; The zipper on the pocket is made of a smooth and lightweight Bislon (Pla); The back of the knee is compatible with knee pads; Stretch; Feel temperature adjustment; ECO (Season) Materials: 75% cotton, 23% polyester, 2% polyurethane, temperature control function denim/9.8 oz); Uses: For work, outdoor activities, leisure activities, golf, fishing, etc. Color Con: Sizes: S, M, L, LL, 3L, 4L, 5L).