The Swim School Perfect Fit Adjustable Fabric Arm Floats are designed for children weighing between 40-80 lbs. These arm floats provide support and safety for young swimmers as they develop their water skills. The adjustable fabric design ensures a comfortable fit, while the medium/large size is suitable for a range of body types. Perfect for use in swimming lessons or recreational water activities, these arm floats from SwimSchool offer a secure and reliable option for children to wear while in the pool or at the beach.