[Safe swimming ring.] We have a total of 6 swimming discs, which are more reliable and safer. For children, safety is paramount; our products have passed safety certification, and we absolutely guarantee children's safety. You can buy with confidence.[High-quality materials.] Our swimming armbands are made of non-toxic, odorless, and environmentally friendly EVA foam. They won't break or absorb moisture, making them safer than inflatable armbands. They won't damage thesafe for children's skin and contains no harmful substances.[Learn the benefits of swimming.] Swimming is one of the best sports for children to help build independence and confidence. Swimming can improve the body's ability to adapt to changes in the environment.Outdoors, it helps resist cold and prevent illness. If the child is in unexpected danger in the water, it can save themselves.[Practical aid for learning to swim.] Swimming float discs are specially designed for swimming, which could be the best swimming tools for your babies to help them float and stay balanced in the water.Help children learn to swim with our easy-to-use armbands. No need for a gas-filled design; the flotation discs are easy to use and teach instantly, saving time.[Suitable size.] Diameter: 18.5 cm / 7.3 inches, Thickness: 2.1 cm / 0.8 inches, Arm ring diameter: 8.5 cm / 3.3 inches. Perfect for children learning to swim with an arm circumference less than 16 cm / 6.3 inches.inches. Please measure your child's arm circumference before purchasing; do not choose based on age! (adults.)