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 sleeve—holds 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: 10.6"W x 9.4"H x 21.7"L; Cubic Volume: 40 L;