HIKA Lightweight Foldable Camping Climbing Hiking Outdoor Backpack, Packable Handy Daypack Material: Water resistant, Durable Nylon, tear resistant . Dimensions: Unfold size 20.86 x 10.23 x8.66 inches ( H x W x D), Fold size:8.6 x9.05x3.9 inches. ( H x W x D) Compact. Folds into zippered inner pocket to fit anywhere. Expanded to be a backpack. Lightweight and Handy.The straps are even padded to help absorb the heaviness of the bag. Ideal for outdoor sports (hiking, camping, climbing, cycling, travelling etc) Easy to pack and unpack this backpack, it is very roomy and strechable . Good constrution. Plenty of room to pack stuff .Separate pockets so it makes it easy to find things. This bag even offers an emergency sort of whistle in the chest buckle