Fight off the wind and cold with this small but mighty piece of your clothing system. The Sitka Jetstream Insulated WS Beanie 2025 boasts PrimaLoft® Silver insulation that locks in body heat and WINDSTOPPER® by GORE-TEX LABS to stop wind dead. Stretch knit panels over the ears and back of head maintain your hearing and all-day comfort. FEATURES: WINDSTOPPER by GORE-TEX Labs cuts wind and repels precipitation Primaloft Silver insulation Sound-permeable fabric on ears to allow for better hearing Stretch knit on rear ¾ of head for improved fit and comfort MPN: 600284