What Our Gearhead(R) Experts Are Saying:"I wore the Lyngen Thermo100 Active Vest on a long skin track and never overheated once. The knitted insulation kept my core warm while my arms stayed free and cool."Ski touring demands warmth without the sweat, and the Lyngen Thermo100 Active Vest from Norrona nails that balance. It's built for the uphill grind, when core warmth matters more than covering your arms. Knitted insulation breathes as hard as you do, while a recycled nylon shell blocks wind on exposed ridgelines. A beanie-compatible hood and zippered chest pocket round it out for a light, technical piece built to move.