The LOWA TREKKING sock guarantee some great times on your feet. The combination of unique knitting technology with functional details to support your feet will deliver the perfect hiking experience. Material Composition: 47% polyamide-nylon 22% merino wool 29% 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: