There's a left and a right sock for a precise fit.
Racing Cycling Socks White Size M (UK) RRP £13.99
Racing Cycling Socks Yellow Size M (UK) RRP £13.99
Pro's Choice Racing Cycling Socks Green +39-44 (UK) RRP £17.99
Racing Cycling Socks Blue +39-45 (UK) RRP £14.99
Pro Racing Cycling Socks Black +39-45 (UK) RRP £13.99
Pro's Choice Racing Cycling Socks White +39-44 (UK) RRP £13.99
