Refer to the National Dressage Rules. Rule 5.15.
Nose Nets Nose nets are only permitted to be used in competitions and warm-up on written approval by the EADC (Equestrian Australia Dressage Committee). Permission will be given on a case-by-case basis.
a) applications with a supporting letter from a veterinarian, are to be sent to the EADC
b) registration details and name of the horse must appear in the application and also the veterinary certificate
c)if approved, the rider of the horse with the nose net must send in a copy of the approval letter from the EADC with entries
d) a copy of the approval letter will be sent to the relevant SDA for their records
e) the rider must also produce a copy of the approval letter from EADC on request to a gear checker, steward or judge at the event
f) it is also recommended that OCs place a copy on the judges' sheets and advise all stewards
g) the nose net must be made of transparent material as per the example at 5.23 h) the nose net must not cover the mouth or bit