This backpack is brand new and still in original package. Hide-away Back Strap. Carry backpack is designed with back compartment to store back straps when not using. Water Repellent and Durable Material. Under seat carry on luggage is made of water repellent 420D nylon for long life. Airline Approved Carry on Backpack. The 45L backpack is 21.7 x 13.8 x 9 inches/ 55 x 35 x 23 cm and 3.4 lbs / 1.56 kg. It is able to fit the allowed maximum size of an IATA flights in the overhead compartment as well as the under seat storage. Backpack is equipped with laptop pocket that can fit up to 17 inch laptop. Roomy Main Compartment I have used some pictures of a black suitcase to illustrate features and benefits. This item is definitely BLUE! There are no packing cubes or locks included.