What Our Gearhead(R) Experts Are Saying:"This fleece is perfect for shoulder season and layering up when temps dip. It's got great breathability thanks to the ActiveTemp(TM) tech, and the structured fit doesn't bunch up under a shell. The textured face gives it a more elevated look than your average fleece."The Trail Mix XT Fleece Jacket keeps us warm and moving comfortably through changing conditions. Made with bluesign(R) approved 100% recycled polyester, this technical fleece layers with ease and delivers the breathable insulation we rely on from morning hikes to chilly campfire nights. The real magic comes from its ActiveTemp(TM) technology-an adaptive fabric treatment that helps regulate body temperature based on our effort level. Thoughtful touches like ergonomic thumbholes, zippered hand pockets, and a flattering, layer-friendly silhouette make it a cold-weather staple we won't leave behind.