5.1 gal (H 19,2 x D 4,4 x W 12,8 inches) Rolltop Rucksack is a dependable city staple that's perfect for commutes on bike or foot. Characterized by a rolltop opening and cycle-ready features. Rolltop Rucksack is carefully designed to keep precipitation out when traveling from point A to Z. To protect essentials from rain, fold the rolltop into a tight scroll and secure using the signature carabiner. Open the rucksack to reveal a single main compartment. Exterior features include a side-access laptop pocket and a front pocket with coated zipper. Cycle-ready features include a front D-ring -- ideal for holding bike locks -- and a buckle-fastened chest strap for a secure ride-proof fit. Rolltop Rucksack is cut from Rains' signature PU fabric, engineered for carrying strength, durability and a smooth feel.