The saddle is a critical part of the horse riding equipment. It provides support to the rider and the horse, and it helps control their movement. It also helps keep the rider upright as they ride. The back of the saddle that gently curves upwards is called cantle. Cantle is the part of the saddle that supports the rider from behind. It consists of a series of raised, curved ribs that can provide additional comfort and help control the horse as it moves.