1. 100% genuine cowhide leather with purely handmade by innovative design; 2. Each piece of natural leather has its own veins and pores; 3. Main zippered bag with a front zippered pocket. Enough space for school and daily use; 4. Adjustable straps lock firmly and make it easy to be worn on your front or back; 5. The mesh panels on the back and straps are air-permeable.