"Billie" sock with Welltex. Map knitted in different zones and developed for the most discerning! With a light stretch and loose shaft to help relieve pressure and help minimize the chance of blistering on your skin and feet. Swedish design developed with diabetes patients and swollen legs in mind.Moisture management and odor control witch may help reduce risk of bacterial and superficial infection. May increases production of nitric oxide to help blood circulation.Perfect for feet's in need, great to be worn both day and night. Welltex . Light stretch . Loose shaft . Swedish design .