PVC or Vinyl is the most commonly used material for making inflatables. There’s been a lot of debate off late about how additives used in PVC are unsafe and toxic. But as of now, the research is blurred and manufacturers aren’t pulling them off the market.
TPU or Thermoplastic Polyurethane is considered to be safer than PVC. It is equally durable. But TPU products are available in limited sizes and designs. Also, these are pricier.
Chlorine, the searing summer sun, salt, pool floats have to endure the worst of elements. It’s imperative that you select one that will last for years without tearing or the color fading.