evo.com | Outdoor Research Midlayer Fleece > The Outdoor Research Trail Mix XT Fleece Jacket is the layer that keeps pace when the trail doesn't slow down. Lightweight, stretchy, and built with thermo-regulating comfort, it moves with you through chilly starts, quick climbs, and everything in between. Regular Fit Thermo-Regulating ActiveTemp(TM) Treatment ActiveTemp(TM) is the thermo-regulating technology that manages your body temperature to keep you cool, dry, and comfortable during high-exertion activities. This smart fabric treatment self-adjusts depending on your level of exertion, sweat, and temperature to actively control body heat and ensure optimal comfort. The harder you work, the faster ActiveTemp(TM) works to keep you cool - so you can focus on your adventure ahead. bluesign(R) approved 100% Recycled Polyester Center Back Length 67.3cm / 26.5in UPF 50+ | Women's Outdoor Research Trail Mix XT Fleece Jacket 2027 - X-Large Black | Polyester