More than just Socks: Everyday socks with Welltex technology gives a comfortable feeling to the feet and can relieve discomfort with cold feet, soreness in the feet, swelling or poor circulation Welltex Technology: Reflects body heat as far-infrared energy to boost circulation – easing discomfort and stiffness from sore muscles, tendons, ligaments, and joints, aiding in accelerated recovery and mobility Thin, Breathable Comfort: Breathable material knitted in different zones, with a light stretch and a loose shaft to avoid pressure and prevent chafing on the feet Use Year Round: Can be used all year round, around the clock, as the Welltex technology has a temperature-regulating effect Simple Relief, Easy Care: Developed for people with strained feet and swollen legs that’s simple with effective comfort and convenience; machine washable for hassle-free care Our Billie Socks were developed for people with extra strained feet and people with swollen legs in mind. Billie socks are knitted in different zones, with a light stretch and a loose shaft to avoid pressure and prevent chafing on the feet. Welltex technology contributes to moisture and temperature regulation to reduce the risk of superficial infections while using your own body’s energy to create a soothing infrared effect, providing relief to sore muscles. The socks provide good breathability and a pleasant feeling to the feet and can relieve problems with cold feet, soreness in the feet, swelling, or poor circulation. The socks can be worn around the clock, and are just as good as everyday socks as they are for sleeping in.