Colour: Charcoal Size: Men's UK 10-13 A fine, smooth fitting business sock. Fine Merino Wool keeps feet warm and comfortable in a lightweight sock that will fit in any shoes. Extra nylon reinforcing will give longer wear. A Health SockĀ® with no tight elastic top. Contents: 60% Fine Merino Wool, 38% Nylon, 2% Elastane. Sizes Available: Small, Medium and Large