Thank you for viewing! Acupressure Socks Foot Acupressure Navy 23-25 cm These socks have bumps on the soles that stimulate acupressure points with every step. They are somewhat thick, so they will keep your feet warm. I took them out of the package and checked the feel, but they don't seem to suit me. Therefore, they are for someone who prefers socks with firm bumps. They are marked "right foot" and "left foot," so please be sure to wear them correctly (._.)