These liners, featuring Coolmax®, are crafted for comfort, added warmth, and long-distance trail practicality, helping to keep your feet dry and protected. Worn close to the skin, these liners rapidly wick moisture away to the outer sock, where it can evaporate, keeping your feet dry and comfortable. They dry exceptionally fast and are ready for use after a quick wash in the morning. Designed with a Flat Toe Seam to reduce bulk and irritation, they also incorporate Lycra® and our Thermo Fit process, ensuring they return to their original shape and size after every wash. Performance Fit, Moisture Management, ThermoFit, Flat toe seam. Composition: 57% Coolmax® / polyester, 20% Nylon / polyamide, 19% Endurofil® / polypropylene, 4% LYCRA® / elastane. Sizing: Small: UK 3-4.5, Medium: UK 5-6.5, Large: UK 7-8.5.