Pool noodle
A pool noodle is a cylindrical piece of flexible, buoyant polyethylene foam. People of all ages use pool noodles while swimming.
Pool noodles are useful to those learning to swim, floating, or engaging in rescue reaching, water play, or aquatic exercise. The most common dimensions are about 160 centimetres (5 ft 3 in) in length and 7 centimetres (3 in) in diameter. The pool noodle is also used for people who experience difficulties in swimming.
The pool noodle is often used to protect sharp edges and corners.