Nothing causes discomfort and distraction like a cold, relentless wind. Sitka'swindproof Jetstream Jacket, utilizing GORE WINDSTOPPER product technology, is one of Sitka'sall-time favorite products year after year. Its precisely engineered fit optimizes comfort and mobility. Built to retain warmth yet breathe when you need it, this workhorse softshell jacket with comfortable micro-grid fleece backer offers the utmost versatility.