We selected a super thick PVC material for this snow tube, together with 0.6mm thick bottom as the super thick material makes the bottom and the side seem more wearproof and scratch resistant. The outer race of this winter snow tube is 47-inch thick in diameter, so it can hold up to 300 pounds in total. The diameter of inner circle is 10.2-inch. In this way, the inflatable snow tube can prop up the weight of adults and kids without difficulty. The advanced seaming fusing technology possesses some outstanding features like leakage resistance and tear resistance. The special coating enables you to have fun in the snow.