Combed cotton. Full colour striped dress sock. 80% Cotton, 18% Nylon, 2% Lycra Elastane. Mens sock sizing: XS - 12.5-3 UK/31-35 EU/13-3.5 US, S - 3-5.5 UK/35-38 EU/3.5-6 US, S/M - 4-7 UK/37-41 EU/4.5-7.5 US, M - 6-8.5 UK/39-42 EU/7-9.5 US, M/L - 8-12 UK/42-47 EU/8.5-12.5 US, L - 9-11.5 UK/43-46 EU/10-12 US, XL - 12+ UK/48-51 EU/13-15.5 US. Ref: UTHZ236