MOST OFFICIAL BACKPACKS ON THE MARKET. • Made from 100% polyester. • Fabric weight: 9.91 oz/yd² (336 g/m²) • Dimensions: H 16.1" (41cm), W 12.2" (31cm), D 5.5" (14cm) • Capacity: 5.3 gallons (20l) • Max weight: 44lbs (20kg) • Water-resistant material