Nylon Imported Nylon lining Zipper closure Hand Wash Only LARGE CAPACITY BACKPACK: This hiking backpack has 40L storage space, dimension is 21.3*13.8*9.1 inch. With multi-compartment design includes one main zipped compartment, one zipped front pockets and two side pockets, one separator and one small zippered pocket in the main compartment, there is more than 10 pockets can hold everything you need in travels, such as phone, pens, maps,bottles or umbrella etc. You can easily organize all your essential stuffs. DURABLE MATERIAL: Our camping backpacks made of high quality tear and waterproof polyester fabrics with smooth metal zippers. Pack and shoulder strap stitching is not easy to tear even if it bears heavy items. All stress points are reinforced with bar tacking to increase its longevity. BREATHABLE MESH PADDING: It is a ergonomically designed daypack. With ventilated mesh padding shoulder straps and backside. It is a perfect hiking backpack for outdoor sports. COMFORTABLE & MULTIFUNCTIONAL: This travel backpack can be easily fold into its own pocket for storage; the sturdy shoulder straps with plentiful sponge padding help relieve the stress from your shoulder. Ideal comfort for daily use or day trips, holiday, travel, hiking, school, camping and shopping. 100% SATISFACTION: If you are unhappy with our hiking daypacks, please do not hesitate to contact us. Support returns and exchanges within 90 days.