Heavyweight women's merino wool base layer bottoms for highly aerobic days in cold weather, the 260 Zone Legless features zoned ventilation panels for active temperature regulation. Fabric Main: 260gm2 Jersey, 97% Merino Wool, 3% Elastane. Fabric Mesh: 180gm2 Eyelet, 98% Merino Wool, 1% Nylon, 1% Elastane. BodyfitZone - features breathable zones for high intensity activity. Gusset for mobility and comfort. Flatlock seams to prevent friction. Fit: Slim.