Listings most commonly list acrylic, polyester, and acrylic/polyester blends (for example 80% acrylic/20% polyester).
Care varies by item: several list machine wash and tumble dry, while others advise hand washing and line drying or laying flat to dry.
Listings commonly describe them as 'quarter height,' with coverage roughly from the ankle up to the lower calf.
Many listings describe midweight knits; some styles are labeled lightweight, while faux fur/plush options are described as thick, fluffy, and more insulating.
Listings highlight ribbed cuffs or ribbed knit construction, soft stretch knit fabrics, and reinforced stitching to help keep them in place and flexible.