The LOWA ATS sock delivers pure comfort. Special padding provides the best-possible support in the ankle and midfoot area, while the comfortable footbed makes your feet feel right at home. Material Composition: 34% polyamide 28% polyacryl 32% merino wool 4% polypropylene 2% elastane Country of Origin: Italy Sock size conversions from EU to USA sizes: EU 35-36 = US Women's 4.5 -5 EU 37-38 = US Women's 6-7, Men's 5-6 EU 39-40 = US Women's 7.5-8.5, Men's 6.5-7.5 EU 41-42 = US Women's 9-10, Men's 8-9 EU 43-44 = US Women's 10.5-11.5, Men's 9.5-10.5 EU 45-46 = US Men's 11-12 EU 47-48 = US Men's 13-14 Product features: