Feature:1. The high-quality PVC material is not easy to leak and puncture.2. Anti-leak valve design.3. Interesting shape, let children like it more.Main Material: PVCMaterial characteristics: safe and non-toxicItem Size: Approx.S (inner diameter 23.5cm, outer diameter 54cm)M (inner diameter 26cm, outer diameter 63.5cm)Package Included:1×Swimming ringNote:1. Please allow slight dimension difference due to different manual measurement.2. Due to the light and screen setting difference, the item's color may be slightly different from the pictures. I wish you a pleasant summer.