The Gelert 3pk Mens Thermal Socks are perfect for keeping your toes and feet nice and toasty. These socks feature a highly soft and comforting material construction for optimal performance in holding in heat without losing comfort. Complete with a stretch construction so that they move with your body to provide greater flexibility and unrestricted feel. Gelert branding, suitable for outdoor use, soft touch, high quality, stretch fabric, lightweight, and ergonomic fit. Composition: 87% Acrylic, 12% Polyester, 1% Elastane. Machine washable.