Size reference: No.60: Inflated inner diameter 22cm (suitable for 2-4 years old, 20-50 catties) No. 70: Inner diameter 26cm (suitable for 5-9 years old, 40-70 catties) No. 80: Inner diameter 30cm after inflation (suitable for 10-15 years old, 70-90 catties) No. 90: Inner diameter after inflation is 35cm (suitable for adults over 16 years old, 95-150kg) Waterproof - Our kids adult pool floats are made of the highest quality extra material, thickened PVC material, BPA free, very good inner Quilted performance, don't worry about leaking swim ring graphic won't fade, let you enjoy summer carefree. Great summer toys for summer parties, inflatable swimming rings, swimming pools and beaches. Great for pool float party decorations, summer gifts, floating, swimming or playing in the pool. It is normal if the item has PVC smell. Since it is a new production package, please place it in a ventilated place for 1-2 days, and the smell will disappear.