Utilizing a blend of top-grade Merino wool and 37.5 infused fibers, this 150g neck gaiter can be used to keep you both concealed and cool in the field. Dunk it in a stream and enjoy the AC. Pull it up over your face and ears and disappear into your surroundings. This little piece does it all. Features: Size: One Size Fits All Exclusive 37.5 Active Particle Technology Exhausts moisture and maintains core body temperature Traps odors (human signature) and releases them when laundered 150g First Lite Aerowool Merino is naturally odor-resistant Retains warmth when soaking wet Aerowool dries faster and is more durable than traditional Merino wool 18" overall length Machine washable Specifications: Layering Position: Accessory Material: AeroWool Weight: 150 Ultralight | 1.3oz Color: Conifer, Specter Camo Sizes: OSFA Recommended Use: Regions: Alaska & British Columbia, Pacific Northwest, Southwest, Intermountain / Rockies, Midwest, Southeast, Northeast Temperatures: 45F - 60F, 60F - 80F, Above 80F