What Our Gearhead(R) Experts Are Saying:"I wore the Infinity Hybrid Insulated Jacket through a stretch of cold morning ski sessions, and the combination of quilted insulation and stretchy side panels made a real difference. I stayed warm without feeling restricted, and the ventilation tab let me dial in my temp on the climb back up without stopping to layer down."Cold training days have a way of testing your commitment before you even leave the trailhead. The Swix Infinity Hybrid Insulated Jacket is built for exactly that moment, wrapping you in quilted synthetic insulation across the body panels where you need warmth most, while elastic side and back panels with brushed interiors give you the range of motion to actually move like an athlete rather than a bundled-up bystander. Swix designed the Infinity with temperature regulation in mind, so the ventilation tab lets you open things up when the effort picks up, and the body heat builds. Zippered pockets keep your essentials secure when you're deep in a workout and not thinking about anything but the next interval, and the adjustable hem seals out drafts when the wind picks up. This is the jacket you reach for when the forecast is unforgiving, but the plan stays the same.