Material: Environment friendly silicone PVC materialProduct specifications:1: 60#: suitable for Age 5-9, 20-30kg. Its outer diameter is 60cm, inner diameter is 28cm and thickness is 0.35mm2: 70#: suitable for age 9-15, 30-45kg. Its outer diameter is 70cm, inner diameter is 30cm and thickness is 0.35mm3: 80#: suitable for 45-60kg. Its outer diameter is 80cm, inner diameter is 32cm and thickness is 0.35mm4: 90#: suitable for 60-90kg. Its outer diameter is 90cm, inner diameter is 36cm and thickness is 0.35mm5: Triangle sleeve: suitable for Age 1-6.Excellent Material -- Our swimming rings are made of high quality Non-toxic ABS material, Phthalates free, lightweight, durable and storable. New improved printing will not fade! These pool floats are greatly for your pool parties and defeat the summer heat.Thick Enough To Keep Safe --Thick enough to withstand the weight of an adult.It has been took a number of tests to assess safety before it reached the public.