S recommended kids height 80-100 weight within 15KG M recommended kids height 100-120 weight within 20KG L recommended kids height 120-130 weight less than 25Kg Features: 1. Light and flexible, close and comfortable 2. Environmentally friendly material neoprene 3. Super warmth 4. Safe cross strap to prevent falling off 5. Stable buckle design 6. Square zip open design 7. Dolphin fin design Name: Children's lifebuoy Material: neoprene Weight: 300g Color: pink blue Suitable for: 3 to 10 (years old) children Packing list 1*Child lifebuoy Reminder: 1. All pictures have been professionally colored, but due to the different ambient light and different display device settings, there may be some deviations between the pictures you see and the items themselves. Please understand. 2. The data is measured manually, there may be some deviation, but it does not affect the use.