The Aqua Force Personal Flotation Device (PFD) Swimwear Flotation Device is a swimsuit designed for use by children with physical and developmental disabilities. Available in boys and girls styles, these one-piece suits are made of a nylon/lycra blend fabric and feature foam blocks securely sewn into the midsection to maintain the wearer's buoyancy. The foam blocks are balanced in between front and back to promote stability. SIZES: Medium (for children 40 to 50 pounds). COLOR: Hot pink or neon green.