Easy to Learn and Beginners Back Float: Provides good flotation support to easily increase body buoyancy Put it on the back and help beginners maintain balance It's easier to learn to swim by moving your arms around and around the pool yourself COMFORT AND SAFETY: Back Float feature snap closure, very easy to adjust Easily snaps on the back and releases arms for proper position and movement Free movement instead of bulky arm floats Requires adult companionship Recommended for your child's safety CONVENIENT AND ADJUSTABLE: With 4 adjustable layers, adjust buoyancy by adding or removing layers. Starting with 4 layers, you can remove individual foam layers Four floating discs, which can be removed one by one to change the number of pads and adjust buoyancy to help increase strength Lengthen the strap to help increase endurance. When more confident with the water, take them AND WATERPROOF - Rear floating swim belt made of soft and durable waterproof Eva foam that 't chip or absorb water Lovely color and touch avoid skin chafing Also a lot less than a life jacket vest, and the portable size is also great to fit in a suitcase Color: blue+yellow+green+pink Material: EVA Package Contents: 1 x Flotation Board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.