Attire for jumper classes resembles that of hunter riders, though may be less formal at lower levels. It is becoming acceptable in some regions and with some organizations for competitors to wear any collared shirt, such as a polo shirt, during very hot weather, rather than the traditional wool hunt coat and long-sleeved ratcatcher. For upper level competitions, such as classics and grand prixs, formal dress is usually required. This usually includes light-colored (usually shades of beige or a pale "canary" yellow) or white breeches, a white shirt, and a dark coat. Some riders are allowed to wear scarlet coats based on achievements in the sport.