HEAVY DUTY STRUCTURES: Commercial-grade Snow Tube Wrapped in Premium Canvas Sleeve 39" blue CONNECTING STRAP: You can connect two or more snow tubes together, multiple people can experience the fun of winter skiing together. TOW STRAP: Can easily pull the snow tube, with the snow tube in the uphill places or around the play (only hand-pulled do not use the vehicle traction) DURABLE AND SAFE: Equipped with sturdy handles for safety and stability The canvas cover is made of oxford material which is wear-resistant and not easy to tear to prevent bursting MORE COMFORTABLE: The seat cushion is 17.7 inches and has a leak-proof cyclone cover at the valve core to prevent scratches on clothing and skin, making skiing more comfortable.