MeiJieLuo Simple Men Chest Bag Sports Youth Shoulder Crossbody Bag(Blue)1. High density wear resistant fabrics, with PVC coating on the back, more tear resistant, friction resistant, sturdy texture 2. Lightweight design, external USB connection to cell phone, convenient and practical 3. Adjustable shoulder straps design, wider shoulder straps, comfortable to carry without shoulder fatigue 4. Smooth zipper design, no jamming 5. Comfortable and breathable fabrics, large capacity pockets, durable and wear resistant 6.