Security Fit: Suitable for 20 30 40 50 Pounds Toddlers and Kids, Suggest for kids age from 2/3/4/5/6 years old. Adjustable straps make this swim vest suitable for chest sizes from 25.5"" to 33.1"", providing a secure fit. | Durable Floaties: Thanks to the thickened nylon fabric, double seams, and Anti-fading technology, our Water Wings Arm Floaties won't rip off when child swimming, durable X 5 and stay bright! | Wear comfort: Our Baby Jumper made of smooth nylon material, reduced dawdling, friendly to kids' tender skin. Lightweight, quick-drying swim wings keep your child comfortable. | Safe Buckle: Press 3 keys at the same time to open the back buckle ensuring that an adult is needed to remove this water jacket, preventing the buckle from breaking by children. | Good Buoyancy: High-density premium foam provides great buoyancy and is strong enough to support children from 20-70 lbs, keeping their head above water. Keep children safe while they have fun. | Building Confidence: Flexible sleeves provide plenty of freedom, giving Baby Swimming Beginners more freedom and building confidence. This allows you to use our Swim Vest device as an effective learn-to-swim aid | Attention: The infant floatie vest is used to learn swimming and have fun, adult supervision is required at all times. For any questions, please feel free to contact us.