Keen "Hybrid Transport" one shoulder bag made of recycled polyester, rubber and aluminum. Padded back and shoulder strap for comfort. Works great as a cross body Shoulder strap can be switched from side to side to middle via the carabiner clip. Interior double zip pocket with carabiner clip inside it, exterior side zip access to main zip compartment, exterior side zip pocket. Water resistant, durable fabric. Great small backpack, excellent condition!