Amazon.com: RAINS Backpack – Durable Waterproof Laptop 。NWT Large size Unisex Ask any questions Original wrapping Material: 100% polyester with polyurethane coating - Lining: 100% polyester - Water column pressure: 8000mm - Measurements H48 x W30 x D12cm / H18.9 x W11.8 x D4.7 inches - Volume: 13 liters / 3.5 gallons - Signature carabiner closure - Flap with magnet snap fastenings - Single main compartment - External back zip pocket - Internal zip pocket - Flat laptop pocket fits 15” device with sleeve - Adjustable backstraps - This product is designed to withstand light to moderate weather conditions The Backpack silhouette is a Rains classic, characterized by its prominent flap and central strap with carabiner closure. This clean and ever contemporary waterproof rucksack features an internal laptop pocket, a spacious main compartment, and a concealed external phone pocket on the back panel. Backpack is cut in Rains’ signature waterproof PU fabric, engineered for carrying strength, durability, and a smooth feel.