Common materials include cotton, polyester (including recycled polyester), thermoplastic rubber (TPR), polypropylene, and blended natural fibers such as cotton, wool, and jute.
Backings range from no backing to latex, PVC foam or polyurethane, and mesh; many rugs also include non-skid rubber backing, textured surfaces, or suction-style features to help them stay in place.
Rugs come in common shapes such as rectangular, round, and novelty (shaped) designs. Example sizes from the results range from about 24"×24" up to 48"×30", with several intermediate rectangular sizes available.
Most rugs are machine-made, with some handmade options available. Several listings show OEKO-TEX certifications, including STANDARD 100 and MADE IN GREEN.
Common special features include memory foam linings, antimicrobial treatments, reversible construction, tufted or chenille textures, and novelty-shaped designs.