There are many brands of belts on the market, but some of the more popular ones include Belts Brand, Calvin Klein, and Gucci. Belts Brand offers a wide variety of belts for both men and women, while Calvin Klein specializes in more formal belts that are often worn with suits. Gucci is a high–end designer brand that offers a wide range of belts, including some that are made from exotic materials such as crocodile skin.