Humphrey Law Cushion Sole Merino Health SocksThis sock has a pure fine merino wool terry knitted cushion sole which provides extra insulation, resilience, and softness underfoot. The leg of the sock is a fine wool blend so looks like a normal fine business sock. The outside of the foot of the sock is nylon to provide longer wear. A Health Sock with no tight elastic top. Contents: 70% Fine Merino Wool, 28% Nylon, 2% Elastane. Small: Women's 3 8, Men's 4. 5 7 Medium: Women's 8 11, Men's 7 10