Fight off the wind and cold with this small but mighty piece of your clothing system. The Sitka Gear Men's Jetstream Insulated WS Beanie 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. FeaturesWINDSTOPPER by GORE-TEX Labs cuts wind and repels precipitationPrimaloft Silver insulationSound-permeable fabric on ears to allow for better hearingStretch knit on rear 3/4 of head for improved fit and comfort