Many antique rugs are not vegan. Traditionally rugs were handmade from animal derived materials such as sheep wool, goat wool and silk, but also from natural fibers such as cotton, jute, hemp and sisal, or a blend of these. With the development of synthetic materials, many contemporary rugs are made from materials such as nylon, acrylic, viscose, polypropylene and polyester. It is possible to find a vegan vintage or a preloved rug. If you are unsure of the materials listed about a rug, do check with the seller.