Made of first class Fiberglass. Suitable for single calves Ultraviolet (UV) rays are produced. -40 0C and +40 0C Temperature resistant. Easily transportable and easy to move if desired Interior and exterior are covered with special waterproof material. It is a microclimate feature and does not allow cold and heat inside. For this reason, it provides a cool environment for calves in summer and a warm environment in winter.