Foot Warmers That Don't Get Cold (Gray) Features: "Foot Warmers That Don't Get Cold" use a double-layered knit with a special fiber blend to cut out cold air and warmly wrap your feet, keeping them warm※. These are "foot-cold-prevention thermal leg warmers." Fluffy and thick, loosely knitted, suitable for layering, thermal Like a kotatsu (heated table), Glamorous Pats Brand new, unused, and unopened. Stored at home. Will be compressed for shipping. Thank you very much! ^_^