Leather offers textural appeal as well as excellent modulation of heat and cold. Most leathers are made of tanned and dried cowhide, but other options include sheep, goat, snake, and alligator. Leather is widely known for its natural look, but it may also be dyed to any color. Made by covering a natural or synthetic base fabric with a polyurethane or PVC coating, faux leather aims to duplicate leather’s look and feel.