Foam Back Floating Safety Swim Bubble with Adjustable Layers Swim Belts Comfortable Waterproof Floaties Device for Kids Toddler Swimming Beginner - 4 Color Split Float 11.8in PRODUCT MATERIALMade of Ethylene-vinyl acetate copolymer(EVA), sturdy foam floats. Comfortable closed cell EVA foam will not absorb water. Product Size: 11.8*9.4*3.1 Inches: Suitable For Children Which Weight Below 198 Pounds. ADJUSTABLE BELT & FUN COLORSThe back belt is adjustable, put the kickboards on your back and buckle the belt to prevent the kickboards from getting falling off. 4 colorful layers can be realigned as you wish and remove the pads one by one according to your swimming skills. EASY LEARNING AND FRIENDLY FOR BEGINNERBack Float Offer Good Floating Support Easily Increase Body Buoyancy Put It On The Back And Help Beginners Keep Balance To Learn Swimming Quickly Perfect For Swimming Beginner And Become More Confident In The Water Helping Children Adjust To Swimming On Their Own Freely Move The Arms And Get Around The Pool On Her Own Learn To Swim Easier. TIPS We showed in detail in the second picture how to properly install the buckle. Please try to pull the strap before using it to see if it is tight enough and will not slip. If it slips easily, it means it's not the right way. You need to reverse and install it. LIFETIME GUARANTEEWe believe in quality products and excellent customer service! Should you have any issues with the use or quality of our product, we are happy to accept returns or offer help through our customer service team, available 24 hours a day!