Used a few times. Trail Rolltop Rucksack is a sporty and utilitarian city staple, perfect for commutes on bike or foot. To protect essentials from rain, fold the rolltop into a tight scroll and secure using the signature carabiner. It 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. Material: 100% polyester with polyurethane coating Lining: 100% polyester Waterproof rating: W3 – Waterproof protection from light rain Water column pressure: 8000mm 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.