HIKA 23l Unisex Urltra-light Foldable Camping Hiking and Travelling Backpack, Packable Handy Daypack Material: Water resistant, Durable Nylon, Dimensions: Unfold size 12.2 x 5.5 x16.1 inches ( L x W x H), Fold size:10.2x1.2x7.5inches. Compact. Folds into zippered inner pocket to fit anywhere. Expanded to be a backpack. Lightweight and Handy. Ideal for outdoor sports (hiking, camping, climbing, cycling, travelling etc) and school bag. Easy to pack and unpack this backpack, it is very roomy . Good constrution. There are no small inserts for pens, no clip for keys, but the 3 pockets will hold all of your supplies with no troubles.