This Product is made of high PVC rubber material and It is BPA-free. This tube is very comfortable so Your Baby can move easily anywhere in the tube. This Bath Tub is suitable for newborn babies to 4 years old babies. How to use: First of all, take out the bathtub and spread it on the ground. Do not rip due to its vacuum contraction state. Open the gas valves on the bottom and inflate about half the air.Then inflate air for the 3 sections separately from bottom to top. Plug the valve cover tightly. Note:Do not pour boiled water into the bathtub directly. Pour cold water first, then pour hot water until the water temperature is suitable for a bath.