inflatable plastic bands, normally worn on the upper arms, to help a wearer float in water and learn to swim
air-filled supports that fit around a swimmer's arms; inflated floats placed around a swimmer's arms
a life preserver consisting of a connected pair of inflatable bags that fit under a person's arms and provide buoyancy; used by children learning to swim
A pair of inflatable waterproof bags designed so that one can be attached to each arm, especially of a child learning to swim, to provide buoyancy