What Our Gearhead(R) Experts Are Saying:"I have been reaching for the Chill Thermal Jacket as my go-to mid-layer on cold morning approaches and it has not let me down once. The TechStretch(TM) Light fabric gives enough stretch to move freely on technical terrain without that stiff, restrictive feeling you get from heavier fleece, and the thumbholes keep my sleeves locked in place under a shell no matter how much I am reaching."The alarm goes off before sunrise and the temperature outside says mid-layer weather. The La Sportiva Chill Thermal Jacket is exactly what gets pulled off the hanger on mornings like that, a full-zip thermal that moves with the body and holds warmth through the cold approach without cooking you the moment the gradient steepens. La Sportiva built this jacket from TechStretch(TM) Light, a GRS-certified waffled fleece constructed from post-consumer recycled PET that delivers real stretch and breathability in a mid-weight build. The slim cut layers cleanly under a shell or hardshell without bunching, and thumbholes keep the sleeves anchored in place through dynamic movement on the wall or the skin track. Elastic cuffs and hem seal in warmth at the extremities, Polygiene(R) treatment keeps things fresh across back-to-back days, and a zippered chest pocket handles a phone, a snack, or a belay device without getting in the way. This is the kind of thermal jacket that quietly becomes the piece you never leave the trailhead without.