Polyester/Nylon, 11.8W x 24.4 L x 13 H.Volume: 3,539.4 Cubic In./ 58 L. UA Storm technology delivers an element-battling, highly water resistant finish. Tough abrasion resistant bottom and side panels. Large front zippered organization pocket. Adjustable, padded Heat Gear Shoulder strap for total comfort. Padded top grab handle. Large vented pocket for laundry or shoes, one mesh pocket and an additional larger zippered pocket for organization. D-ring on front panel for added attachment point.