Suitable for all infants up from 3 - 6 years old(15-30 KG) Made with high quality, environmental friendly PearlFoam™. This is a premium latex material that is moisture proof, very breathable, lightweight with superior buoyancy. It has an elastic waterproof skin. BPA Free. This is soft and warm in the water Develop confidence. This unique swim jacket trainer is a great way to learn how to float, paddle and swim! Adjustable buckle at the back to suit most infant sizes. This is very easy to Adjust. Unfasten safety clip and easily slip on. You can tighten up as necessary to avoid any slipping. Helps move freely in a comfortable position. Specially designed large easy slip-on arm rings. This acts like a life jacket keeping them stable as they move in any direction they please