Rider's gear is a term used to describe the equipment and clothing that a horseback rider needs in order to safely and comfortably ride a horse. The term includes items such as saddles, bridles, stirrups, boots, helmets, and protective vests. The crossword solution for the term Rider's Gear is REIN, which is a type of strap or rope used to control a horse. It is usually attached to the bridle and is held by the rider in order to guide the horse.