Typically of a stout build, with strong bones, large joints, and steady disposition, it is a body type of horse rather than a specific breed.
In general terms, cobs are larger than ponies, standing 14.2 hands (58 inches, 147 cm) or taller, but are relatively small and compact, usually with somewhat short legs.
Cob-type breeds have become increasingly popular for Riding for the Disabled Association (RDA), as well as for riders who seek horses who are responsive but with a calm temperament, shorter stature and steady, comfortable gaits.
A short-legged animal exceeding 148 centimetres (14.2+1⁄2 hands; 58+1⁄2 in) with a maximum height of 155 centimetres (15.1 hands; 61 in), it has bone and substance with quality and is capable of carrying a substantial weight ... Cobs should have sensible heads, (sometimes roman nosed), a full generous eye, shapely neck crested on the top, with a hogged mane and well defined wither ...
Cobs are exhibited with manes hogged, legs trimmed, and pulled tails and may be ridden astride or sidesaddle.
As with all horse showing disciplines, riders who exhibit cobs are required to conform to strict rules for personal attire.