Amazon.com: RAINS Trail Rolltop Waterproof Backpack – Black 。Rain Rains Trail Rolltop Backpack Waves is a city staple, perfect for commutes on bike or foot. The silhouette is characterized by side-mounted signature buckles and a rolltop opening for a sporty utilitarian look. The waterproof bag also features an internal padded laptop pocket, front zip pocket and padded back panel. The design is finished with a buckle fastened chest strap for a secure ride-proof fit. Trail Rolltop Rucksack is cut in Rains signature waterproof PU fabric, engineered for carrying strength, durability, and a smooth feel. Rains Trail Rolltop Backpack Waves is a spacious men´s and women´s waterproof bag. • Material: 100% polyester with polyurethane coating • Lining: 100% polyester • Water column pressure: 8000mm • Waterproof rating: W3 – Waterproof protection from light rain • Measurements: H47 x W36 x D13cm / H18.5 x W14.2 x D5.1 inches • Volume: 19 liters / 5.1 gallons • Weight: 898 g / 31.7 oz. • Rolltop opening with snap compression • Single main compartment • Front pocket with coated zip • Side-access laptop pocket fits 16” device • Padded mesh back panel • Adjustable padded backstraps • Webbing carry handle • Adjustable chest strap • This product is designed to withstand light to moderate weather conditions