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: 12.4"W x 10.5"H x 23"L; Cubic Volume: 50 L