Tilami New Antifouling Design 18 Inch Oversized Load Multi-Compartment Wheeled Rolling Backpack Luggage for Kids &hellip; polyester At least 30lb bearing with high-strength aluminum alloy rod; Multifunction usage with Tilami armor bottom protection system Tilami personalized design of shoulder straps padded pocket make your wheeling time more convenient and fun Big storage capacity with Tilami large multi-compartment design can hold more belongings Suitable for different occasions with variety of Tilami personalized patterns Tilami back CONCEALED POCKETS design makes the strape more durable, please put the strape into the back CONCEALED POCKETS when the wheels working!!!