Breathable and Insulating Layering Foundation for High-Output Pursuits The Vigor Grid Fleece Half Zip is made for technical performance, perfect for layering on cool and cold-weather activities on the trail and in the alpine. Crafted from a bluesign® approved polyester blend, the breathable and insulating Vigor Grid Fleece features thermoregulating ActiveTemp™, a technology that adjusts to body temperature to keep you comfortable during active start-stop activities. The material's movement-mirroring stretch and raglan sleeves allow for an unrestricted range of motion. The flat-seam construction and chafe-free design with dynamic reach provide all-day comfort. Ergonomic-fit thumb holes keep the sleeves pulled down where you like them, and a zip chest pocket keeps gels and phones close by. Featuring a standard fit and built for layering, the breathable, moisture-wicking, and quick-dryingVigor Grid Fleece Half Zip is a foundational piece to building the ultimate outdoor kit.