Paddle boarding is a form of surfing in which the rider uses a paddle to move through the water while standing on a surfboard. Paddleboards are made of fiberglass, epoxy, and/or carbon fibre.Paddleboards are divided by length into three classes: Stock, 14 Foot, and Unlimited. Stock boards are 12 ft (3.7 m) long, and best for paddlers around 180 lb (82 kg) or less. Stock boards are easy to accelerate and fast in choppy water. But with their short waterline, they lack the calm water top speed of 14 foot or Unlimited boards.