It's a 100% cotton canvas, with natural spanish leather bottom. It's very resistant and robust, suitable to carry your own laptop or books. The lining is a textured fabric 100% cotton as well, handprinted with *Autentico Chalk Paint* and Roller Collection by Crea Decora Recicla There's a pocket inside to keep your keys and mobile. The dimension are about 40x35x8 cm (13"x10"x2"), the perfect size for your A4/Letter folder and notebooks! The handles are adjustable.