Tactel® inner layer stays with the foot, wicking away moisture, whilst the soft merino wool/cotton mix outer moves with the shoe. Top and side vents maintain an even temperature. Arch braces on both layers help prevent unwanted movement. For all types of off road activity. Outer layer: 45% merino wool, 42% cotton, 12% nylon, 1% elastane Lycra. Inner layer 100% Tactel®. Colours: pink (ladies'). Navy (men's).