A pool noodle is a lightweight, flexible foam tube commonly used in swimming pools. Typically around 5 to 6 feet long and 2 to 3 inches in diameter, these colorful noodles provide buoyancy and support for swimmers of all ages. They are often used for recreational activities, water exercises, and as flotation devices for beginners learning to swim. In addition to their use in pools, pool noodles can serve various purposes outside of water activities. They can be cut and shaped for crafts, used as insulation for pipes, or even as a fun tool for games and activities in the backyard. Their versatility makes them a popular item for both leisure and practical applications.