1. Novel and beautiful (cover can be opened 90°, more breathable master can move freely) 2. Easy to carry (shoulder/pull rod) , please find the screwdriver in the box and fasten the wheel before using. 3. Comfortable and breathable (all-directional breathable design, detachable breathable back plate, top mesh vent, front cover vent) 4. Meticulous workmanship (removable shoulder strap, suitable for rod consignment) 5. Labor-saving pull rod design (three-gear design to ensure travel comfort, pull rod with silent universal wheel, more practical)