Ticking is the outer layer of protective fabric that covers and encases the mattress. Often referred to as the mattress cover, it can enhance the feel and durability of the mattress. It plays a significant role in breathability and temperature regulation, where natural fibers are superior to synthetic ones. Inexpensive ticking is made from polyester or polypropylene, while quality ticking is made from cotton, rayon or viscose and is breathable, flexible, durable, and antistatic. Popular types of ticking include damask and knit.