100% polyester; UA Storm technology delivers an element-battling, highly water-repellent finish; Works as both a backpack & duffle with removable duffle strap; Padded airmesh back panel & PU-coated body fabric for ultimate durability & breathability; Large vented main compartment with internal organization; Soft-lined laptop sleeveholds up to 15″; Dual-direction extra deep water bottle pockets & 2 exterior valuables pocket; Gusseted laundry/shoe pocket placed at bottom; Welded hypalon modern molle webbing for additional attachment points SPECS: Style #: 1361225; Dimensions: 12.4″W x 10.5″H x 23″L; Cubic Volume: 50 L