Ultimate warmth. Designed for the coldest days and the biggest adventure. Olympus is our warmest base layer offering unrivalled warmth to weight ratio and strategically placed mesh panels to ensure breathability. We use midweight 250 merino wool with added elastane so that Olympus will keep its shape and last longer. Features:  Slim Fit Full-length base layer legging Flatlocked seams to prevent friction  Merino mesh panels behind the knee 250gsm Merino Blend, 97% Merino Wool, 3% Elastane Colour: Thistle Cloud Olympus Womens Thermal Leggings - Thistle Cloud