Activa Unisex Sock C1 Large Black are made from a natural wood fibre giving the feel and texture of silk. The wood fibres are from sustainable forests and woven to prodcue an extremly smooth, comfortable sock. The sock's apperance and the remarkable ease of apllication will appeal to both male and female wearers. The Activa unisex sock has been developed with the very latest knitting technology using computer aided design. This produces an almost seamless transition between toe, heel and welt, reducing friction and improving comfort.