Berchirly 35L! Travel Backpacks, Ultra Lightweight Foldable Backpack Packable Handy Outdoor Hiking Camping Daypack for Men and Women Material: water resistant nylon fabric. Dimension ( W x H x D ) 12 x 8.2 x 20 inch; weight: 0.18kg; capacity: 35L. Structure: Large main compartment and multiple outer pockets for 17 inch laptop. Suitable Occasion: Lightweight outdoor backpack, weekender duffel backpack, outdoor camping hiking backpack. 45 days no reason to refund or exchange, any problem, contact our email directly.