Features Size: 75/65/60cm(H)x45/35/30cm(L)*40/30/25cm(W); Large capacity of 40L/50L/60L, 3D breathable S-type strap, mesh belt, resin mesh carrying system(could be removed) Large front pocket, multiple zippered side pockets, and multiple elastic bands, extend front bag, good for outdoor sports. Quality fabrics: quality polyester fabric, water repellent, tear resistant, wear resistant, breathable and moistureproof, smooth and comfortable SBS zipper, YNS buckle-cold-resistant and securely; reflective strip design, higher safety factor for night; water outlet design, more humane, more convenient for travelling Double waterproof design, come with a rain cover Description Product Description Features: 1.40L-60L large capacity, lightweight compact packable daypack. Use SBS Zipper, YNS Brand fastener, use air cushion belt suspension system. Resin mesh carrrying system (could be removed), Internal Frame Pack. 2.Super resin mesh carrying professional adjustable weight decomposition system; double rainproof design, come with a rain cover. Pack-in pocket doubles as a inner pocket,bottle holder on the both sides. Large front pocket, multiple elastic bands. 3.Powerful plug-in system, can hang sleeping bags,tents, walking sticks and all other things in all on this bag. The bottom of the backpack waist belt with pocket on one side like the waist bag. 4.Material: water-resistant polyester + nylon. Breathable mesh shoulder straps, moisture-proof, touch smoothly. 5.Reflective stripe design,increased nocturnal safety index. Waist width is about 120cm, you can Adjust the tightness as you need. Product Parameters: *Capacity: 40L / 50L / 60L *Material: Polyester(Water Repellent Fabric)+Nylon *The Suspension System: resin mesh carrying system *The Suspension System Structure: Internal Frame Pack *Size: 75*40*35cm(60L) *70*35*30cm(50L) *65*30*25cm(40L) *Net Weight: About 1.6kg *Colors: Green, Dark green, Blue, Red etc. Package: 1*backpack 1*rain cover