With intelligent ventilation, the Women's 150 Zone LS Crewe provides year round support and control, whether trekking cross country or heading out to the trails for a nimble post work run. Not only famous for its insulation properties, the BodyfitZONE™ construction fully ventilates the torso and arms while fully managing moisture for composed, comfortable performance in any activity. The Zone technology features merino fibres for an ulta-soft, warming feel, with each individual fibre wrapped in nylon and LYCRA® for stretch, durability and mobility. Plus, because it was made in the mountains rather than in a petrochemical laboratory, this Merino wool fibre is naturally renewable, recyclable and biodegradable* (*wool tops, under certain conditions) ... More info