Main Features: ● Made of water-resistant 230D polyester, durable, water-resistant, anti-scratch and lightweight ● Breathable pad in back and ergonomic straps, more comfortable for you to carry heavy stuff ● Double layer anti-theft zipper, safe and reliable ● Adjustable straps, meeting your different needs ● Main pockets with two side pockets for conveniently carrying water bottle or other items ● 21L large capacity and 15kg load-carrying capacity, it can hold 17 inch laptop easily Specification General Brand: TIGERNU Bag Capacity: 21L Capacity: 21 - 30L Features: Laptop Bag,Water Resistance,Waterproof For: Climbing,Cycling,Other,Traveling Gender: Unisex Material: Polyester Strap Length: 44 - 80cm Style: Business Type: Backpack Specifications Package size (L x W x H): 43.00 x 30.00 x 20.00 cm / 16.93 x 11.81 x 7.87 inches Package weight: 0.8300 kg Package Contents: 1 x Tigernu T - B3164 Backpack