This hat features ScentLok's patented Carbon Alloy technology for maximum odor absorption, moisture wicking treatment to wick sweat away, and microfleece inner with roll cuff design keep your ears warm.Specifications and Features: Carbon Alloy technology for odor adsorption Antimicrobial treatment helps fight bacteria Moisture wicking treatment Embroidered ScentLok logo on front Embroidered "ScentLok" on the bill Adjustable buckle closure One size fits most Polyester