Materials: Genuine leather. high quality polyester inner and hardware .metal hardware closure. casual and fashion.BAG SIZE: 25x 17x7.5CM. Adjustable Shoulder Strap(25"-40")--very convenient to wear carry-on.MULTI POCKETS: Two main zippered pocket. a zipper inside pocket.two open side pocket. two pen. two zippered outside pockets.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.