Urban Peak 2 in 1 Travel Backpack 65L with detachable 15L Daypack Main Pack: (65L) 3550 (cu in) 27 h x 15w x 8.5d, Daypack (15L) 725 (cu in) 17.5h x 11w x 6.5d Inner detachable zippered laundry bag and hidden Velcro storage pocket with rain cover. Fully secured shoulder straps when checking your bag at the airport, side I.D. tag and two coded locks. Detachable daypack has felt lined pocket, accessory loops, side mesh pockets and compression straps. Air Bridge back system with padded adjustable shoulder straps and unisex sternum strap