The first stretch of a cold training session is when warmth matters most, and the Swix Horizon Jacket fills its front and shoulder panels with 90/10 duck down and lightweight synthetic insulation. A woven softshell with a water-repellent finish covers that insulation, so this insulated cross-country ski jacket carries its warmth without bulk. What Our Gearhead(R) Experts Are Saying:"Once I had warmed up and my pace picked up, the elastic panels with the brushed inside let the heat escape, and the jacket stayed comfortable at a hard effort. The panels moved with my arms on every pole stroke, which kept the jacket feeling light."