For infants 20-30lbs, the Salus Nimbus is a Personal Flotation Device (PDF) that is designed to keep a conscious person afloat in calm conditions. PFDs were designed for use in recreational boating and are a good choice for people who are confident in the water. This vest will make waterplay safer for children and more relaxing for adults. Specially contoured to hug little bodies, children will get the best fit, mobility and safety at the water's edge, or while swimming or boating. Designed for comfort, the Salus Nimbus is soft to the touch, encouraging children to wear it for hours at a time. All the vest's float but they can't save lives if kids don't keep them on.