Target audienceSuitable for children from 3 months to 3 years old. Please refer to our product images and sizes. Great DesignBaby can kick and push the side of the buoy. The front end of the buoy keeps its head away from the water. Convenient and Simple: Easy to inflate and deflate. Easy to fold for easy storage and transport. Two-stage air chamber design. Please inflate the small tube first, then the big tube. Premium Quality: 0.35mm thick PVC. The vest is designed for adjustable comfort. The 40-degree armpits help baby learn to swim and the back float helps prevent spills. Be careful not to over-inflate the buoy (80%-90% inflation is enough). Features: Sizes: Our store offers a variety of sizes for children 6 months to 6 years old. Adjust the size according to age, please choose the size that suits you. PVC material thickness: 0.35mm Recommended age: under 6 years old. Warning: - Babies are unpredictable, do not let them swim alone. Due to the production, shipping and packaging process, there may be an odor during the first use: it will disappear after a few days. - Wait 15 minutes after inflating the buoy, then check the tightness before use. - Check that the buoy is 90% inflated, do not over-inflate.