Water-resistant UA Storm technology keeps your essentials dry CORDURA fabric is extremely durable but lightweight with PU-coated zippers & front for added protection LEVELED strap system guides you to assure straps are adjusted evenly for balanced weight distribution Breathable foam back panel for ultimate comfort & support Adjustable, removable UA Strap Clip on shoulder to prevent duffle bag from falling off when carrying both Strap clip works best when sternum clip is fastened Back compartment with laptop & tablet sleeves—holds up to 15' MacBook Pro or similarly sized laptop Large main compartment with internal organization, 2 secure front pockets & expandable shoe pocket