Thick and wear-resistant PVC material The skateboard tube is made of environmentally friendly, ultra-thick PVC material with a bottom thickness of 0.6 mm. The extra thick material gives the bottom and sides a higher level of abrasion and scratch resistance. With advanced seamless adhesive technology, it has good leakage and maturity, and can be waterproof. With a special coating, you can slide quickly and freely in the snow and play happily.A thick sled tube 47 inches in diameter in the outer ring that can withstand a weight of 300 pounds. The diameter of the inner ring is 16 inches and the sliding tube can easily support the weight of adults and children. The streamlined circular design has no protrusions that children can appreciate. It will bring unlimited fun to your family and friends.We use a three-in-one inflation valve design for easy inflation and deflation and can be inflated with an air pump. The double shut-off valve can increase the airtightness of the snow pipe and reduce the possibility of the snow pipe leaking. The large valve can be quickly inflated and deflated, and the small valve can inflate air. After the inflation is complete you can use it.The handle of the inflatable sled tube is double reinforced and the strong handle makes you and your family safer while skiing. And make it more durable, avoid the problem of easy tearing due to high tension. You can hold the handle firmly even when wearing gloves. We take your safety very seriously, so all inflatable products are safety-tested.