KowaKowa - Vantelin Kowa Wrist Support Thermal - 2 Types

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Brand from Japan: Kowa. Self-heat fiber made with moisture absorbing thermal material supports your wrist warmly and reduces the discomfort while working or doing housework. Self-heat fiber made with moisture absorbing thermal material supports your wrist warmly and reduces the discomfort while working or doing housework. Self-heat fiber keeps you warm well. The thermal fiber absorbs the moisture from sweat and convert the kinetic energy from the moisture into heat energy. It supports your wrist warmly in cold weather. Sandwiching Taping Structure on the front and the back of the wrist provides a splint-like joint support and reduces discomfort by restricting excessive movements of the wrist. Features the Thumb-Hole Lock Structure to properly fit the thumb and to prevent the supporter from loosening without limiting the range of motion. There are 2 sizes, Medium and Large. How to determine the proper size. Measure the circumference of the arm about 3 inches below the wrist. Medium: 15cm-17cm Large: 17cm-19cm If two sizes apply, choose the larger one.