From the seller

Kids 2-12 years Speedo Arm Float It's a fantastic float to use for beginners who are learning to swim or just want to splash in a pool. Speedo Kids' Begin to Swim Fabric Arm Bands are designed in a pink butterfly motif. They also function as Level 2 introductory swim aids to help young kids build water confidence. Fit Before Inflating: Place the deflated bands onto your child's upper arms first. Slide them up near the shoulders. Proper Inflation: Open the safety valves. Pinch or squeeze the base of each valve with your fingers or teeth while blowing air inside. Double Chamber Safety: Fill both air chambers on each arm until they provide a firm, snug fit that will not slide down. Do not over-inflate. Secure the Valves: Securely push the stoppers back into the valves, then press the valves firmly downward so they sit flush with the armband surface.