1:Size: 14*3*7 inches

2: material: Polyester

3. PERFECT FIT = water backpack for men, women, teens, and youth. Low-profile athletic cut is fully adjustable and fits all sizes comfortably. Comfort-stitched straps with high-density notched foam stabilizer rests on your shoulders and breathable light weight mesh covering means you can wear this pack for hours and not notice it’s on

4.HIGH-QUALITY CONSTRUCTION AND DESIGN = Cushioned, breathable mesh back panel with quick drain drip hole. Extra padding for max comfort. Stay-put thumb adjustment loops for shoulder straps maintain your settings