a classic rains, the racksack is very similar to the backpack but with a uniform back, always in the waterproof fabric, sky blue color Material: 100% polyester with polyurethane coating Lining: 100% polyester Impermeability of the fabric in water column: 8000 mm Measurements: Height 42 cm x Length. 29.5cm x W. 11cm Capacity: 11 litres Weight: 791g Material: 100% polyester with polyurethane coating Water column pressure: 8000mm Measurements: H27 x W52 x D26cm / H10.6 x W20.5 x D10.2 inches Capacity: 37 liters / 9.6 gallons Weight: 824g