The wicking, quick-drying, breathable Baritone Quarter Zip adjusts to your body temperature to keep you cool, dry, and comfortable during high-exertion activities. ActiveTemp, a thermo-regulating technology, regulates heat as the tempo increases and features a movement-mirroring stretch that compliments the body's natural movement. In addition, it also features thoughtful design features such as UPF 30 sun protection, flat-seam construction, and thumb holes. The Baritone Quarter Zip is built for comfort and performance, perfect for active pursuits or relaxing in camp on your rest day.