Top winter xl (48-50) socks blue. long thermal socks with thermolite, antibacterial and anti-stress structure. composition: 58% polyester thermolite, 20% polyester coolmax freshfx, 10% nylon, 4% wool merina, 4% acrylic, 2% elastan lycra, 2% cotton. use in agriculture, construction, industry, cleaning, logistics, for cold environments. for men and women. not detectable by metal detector.