The Vulkan advanced elastic knee support is the latest innovation in lightweight supports. Technically developed with NanoFlextra technology, it offers a superior performance material with multiple functions.Each support not only provides uniform support and compression but has unique heat retaining properties that increase the blood flow around the joints during activities to speed up the body"s natural healing process.Features a unique comfort and heat retention capability, provides superior support and compression to control and limit swelling it is ideal for sprains and strains and is easily worn under clothing for daily prevention and protection.Sizing in CMS (28.5-31), M (31 - 35), L (36 - 40.5)