The Sitka Gear Men's Fanatic Insulated Bibs offer whitetail hunters silence for frigid treestand hunts with an innovative ultra-quiet Gore-Tex Infinium with Windstopper Technology textile package that enhances stealth by cutting the audible engagement distance with a deer in half. New body mapping on the leg and gusset shield the bib from burrs, and an enhanced high-loft berber fleece-face improves Gore Optifade clarity for better concealment and further silences the bib. Compression-resistant PrimaLoft Silver Hi-Loft Ultra insulation adds warmth in critical areas while reducing bulk when wearing knee boots. Cargo pockets with quiet snaps and full-length ultra-quiet YKK Vislon zippers on the legs further suppress noise and allow easy ventilation when layering. The Fanatic Bib integrates seamlessly with the rest of the new Fanatic System to add deadly new gear to the whitetail hunter's late-season quiver.