The Krimson Klover Pow Zip Neck Ski Sweater carries a Nordic jacquard design built for actual mountain layering, with a functional zip neck that opens up when the pace picks up mid-run. A soft blend of Lenzing(TM) EcoVero(TM) viscose and polyester keeps it breathable, using a plant-based fiber sourced from renewable wood with a smaller footprint than conventional viscose. The slim, 24 inch length fits cleanly under a shell without adding bulk to a layering system. What Our Gearhead(R) Experts Are Saying:"I unzip the neck on the skin track to dump heat, then zip it right back up on the chairlift without needing to dig out another layer. It's the first mid-layer I've reached for that actually earns its zipper."