The Men's Base Layer Coolmax Liner Boot Socks are comfortable and provide additional warmth for long distance hikes and walks. These liners transport moisture away from the skin out to the main sock so it can evaporate ensuring your feet are kept dry and comfortable. Ideal to be worn as a base layer under your walking socksCoolmax fabric helps keep feet dry and healthy during intense activityHelps prevent rubbing and blisteringDofE Recommended Kit - features on the DofE Expedition Kit ListFibre Contents57% Coolmax / Polyester20% Nylon / Polyamide19% Endurofil / Polypropylene4% LYCRA / Elastane