Materials: Genuine leather material with leather zipper pullers. high quality polyester inner and hardware .leather logo embossing.BAG SIZE: 33x 19.5x7CM. Adjustable and removable shoulder strap(25-40inch)--very convenient to wear carry-on.MULTI POCKETS: A main zippered pocket.two open side pocket. a zippered side pocket.two pen. front a zipper pocket.FEATURE: Back net cotton pad material・ can cushion the back pressure. soft and breathable.MULTIPLE USE WAYS CASUAL BAG: Adopting one-shoulder strap design to make it act as a chest bag.a single-shoulder bag or a cross-body bag for use. MULTIPLE USAGE: This is travel bag/hiking bag/schoolbag/casual daypack/Ipad bag and multi-purpos bag・ safty and prevent theft・ make it to be a must for our daily Travel.