Women's Fit: All Year Comfort & Warmth. Comfort: WoolFusion® of Merino/Coolmax®. Low tension cuff. Summit: Designed for mountains and cold environments. Women’s slim fit style designed for outdoor ventures, any season, anywhere – from mountain climbs to trail walks. WoolFusion® warmth and softness, that ensures dry and comfortable feet. Fibre Content: 46% Coolmax®/ polyester 30% Merino Wool 23% Nylon/polyamide 1% Lycra®/elastane