FACENATURE Outdoor Sports Camping Hiking Climbing Waterproof Internal Frame Backpack Lightweight Travel Daypacks 40L 50L Trekking Packs with Rain Cover nylon Capacity of 40L and 50L, Size(40L):47cm (H)*22cm (L)*28cm (W)/18in(H)*8.5in(L)*11in(W)Size(50L): 56cm (H)*31cm (L)*26cm (W)/12in(H)*12in(L)*10in(W) Resin Mesh 3D suspension carrying system; water repellent surface and come with a rain cover, double waterproof. Chest strap with a lifesaving whistle, good for outdoors. Breathable, mesh, widened and thickened S-type strap; air cushion belt suspension system, Internal Frame Pack backpack. SBS zipper, YNS buckle, cold-resistant and securely; Reflective strip design. Powerful hanging system, daisy chains, D-shape hooks, compression straps, bottom loops, soft latching loops, key rings and bottom straps for hanging tools, trekking pole, tents, sleeping bags, and other accessory. High quality professional backpack for camping, hiking and backpacking, functionally versatile. Main compartment with divider, bladder compartment with hydration access, hip-belt pockets, front pockets and side pockets to keep your stuff separate and organized.