Security Fit: Shoulder fit and two adjustable straps on the back snugly, providing a secure fit. Suitable for 30 40 50 60 70 Pounds Toddlers and Kids, suggested for kids aged from 3/4/5/6/7years old. | Durable Flotation Device: Thanks to the thickened nylon fabric, double seams, and Anti-fading technology, our Water Wings Arm Floaties won't rip off when a child is swimming, durable X 5 and stay bright! | Wear comfort: Our toddler floaties are made of smooth nylon material, reduced dawdling, friendly to kids' tender skin. | Double 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 90 lbs, keeping your kid's head above water. | 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 for learning to swim and have fun, adult supervision is required at all times. For any questions, please feel free to contact us.