【Product Specifications】 Package Contents: Set of 2 arm rings. The air chambers have a two-layer structure (top and bottom), allowing them to be securely worn on both arms, providing a sense of security for children who are new to water play. Ideal for practicing swimming for children who are just starting out, and helps to reduce their fear of water. 【Suitable for a Wide Range of Ages and Body Types】 Suitable for ages 3 and up, and for those weighing 15-100kg. The design can be adjusted to fit the size of the arms, allowing use by a wide range of people, from children to adults. It is recommended to inflate to about 80% capacity when using, and to use under adult supervision for the first time.