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rider 
Person who rides a horse; during dressage competitions, the rider’s attire and the horse’s harness are strictly regulated.
saddle
Somewhat curved unit that is made mostly of leather; it is set on the horse’s back for the rider to sit on.
jacket
Long-sleeved coat that is closed in front and often has tails; it is dark in color and is worn over a white shirt and a white tie.
girth
Strap around the horse’s belly that keeps the saddle on its back.
glove
Covering for the hand and wrist that takes the shape of the fingers; white gloves are mandatory in dressage competitions.
boot
Footwear that comes up to just below the knee; in dressage, the rider wears black boots over white pants.
stirrup iron
Metal ring that hangs from each side of the saddle to support the rider’s feet.
