ELLIKER Dayle Roll Top Backpack Sand. 100% waterproof backpack made from 100% recycled polyester fabric made from GRS-certified plastic bottles. Roll-top closure with easy-to-use G-Clip for easy access to the interior. Bag capacity can be increased from 21 to 25L by unrolling the roll closure. Padded shoulder straps, contoured back rings and adjustable waist and chest straps. Padded 15" laptop compartment with exterior access. Multiple interior compartments. Polyurethane coating. Reinforced seams. YKK closures. Capacity 21/25L. Size : 49 x 29 x 14.5 cm.