This manly cowboy is obviously also a bodybuilder. It takes pressing weights and a strict diet to produces those muscles.
Why wear chaps?
Chaps are intended to protect the legs of cowboys from contact with daily environmental hazards seen in working with cattle, horses and other livestock. They help to protect riders’ legs from scraping on brush, injury from thorns of cacti, sagebrush, mesquite and other thorny vegetation. Chaps are also useful for other types of riding. Leather chaps stick to a leather saddle or a bareback horse better than do fabric trousers and thus help the rider stay on. They are worn by rodeo competitors in “rough stock” events, including bull riding, saddle bronc and bareback riding. Riders in other disciplines, including various styles of English riding, sometimes wear chaps while schooling horses.
Some guys have a chaps fetish. Not one of my own obsessions.