The Speedo Sea Squad Back Float is a fun way to help children stay buoyant & align their bodes correctly in the water as they learn to swim. It is worn on the back with an adjustable chest strap to provide a secure fit for your child. A layer can be removed one at a time as your child's confidence grows. Features Sizes 2-6 Years Removable layers as confidence grows Assists with buoyancy & alignment when learning to swim Worn on the back to keep a horizontal position in the water Children must be under supervision when using this product