Rules at non-FEI competition vary. In the USA, formal attire is not required if all phases run in one day or for the lower levels. Though navy and black coats are the preferred traditional style, riders may wear any conservatively colored dark or tweed hunting coat with a white shirt and choker or, preferably, a stock tie with pin. If a rider wishes to stay within traditional requirements for higher-level competition, breeches should be white, fawn, or cream. A black or navy hunt cap or derby hat may be worn, although many riders use an equestrian helmet, which are considered safer. Helmets are compulsory at lower levels.