Bridgedale Coolmax Liner Base Layer (2 Pack) Boot Socks - Men\'s Wear a pair of Bridgedale Coolmax Liner Sock, either on their own for light summer hikes or as a baselayer under thicker socks, to keep your feet fresh, dry and hygienic. The Coolmax® Sock Liners are ideally worn under hiking / thicker socks to add extra cushioning and reduce abrasion. Worn next to the skin, these liners transport moisture quickly away from the skin out to the main sock where it can evaporate keeping feet dry and comfortable. Extremely quick drying they\'ll be ready and waiting in the morning after a quick wash.  These liners feature moisture-managing fibres that wick sweat away from the skin and dry quickly for lasting comfort. Thermo Fit construction means they returns to its original shape and size after every wash Extra Comfort and Dryness Next-to-Skin cooling socks perfect for long days of hiking and trail walking - Recommended by the Duke of Edinburgh\'s (DofE) and featuring on the DofE Expedition Kit List Features: Includes 2 pairs Sock Height: Boot / Crew DofE recommended product Coolmax® Moisture Management: Moisture wicking performance for dry feet.  Liner: Baselayer for under socks. Fine-knit soft Coolmax® microfibres help prevent blisters, soreness and allergies. Recommended to be worn under other Bridgedale socks. Abrasion and wash resistant Reinforced heel, ankle and toe Fibre Content:  57% Coolmax® / polyester  20% Nylon / polyamide  19% Endurofil® / polypropylene  4% Lycra® / elastane CoolMax® - CoolMax fabrics are engineered to wick excess moisture away from your skin to keep you feeling dry and comfortable. Size Guide: Please see this guide to get the correct sizing for your socks. UNISEX / MEN\'S Sock Size UK Europe USA Cm / Inches Small 3-5.5 36-39 4-6.5 22.0-24.5 / 8.66-9.64 Medium 6-8.5 40-43 7-9.5 24.5-27.0 / 9.64-10.63 Large 9-11.5 44-47 10-12.5 27.0-29.0 / 10.63-11.42 X-Large 12+ 48+ 13+ 29.0+ / 11.42+