The Buff Knitted and Polar Hat boasts performance, enhanced by the cozy design, which features a knitted exterior and warm polar fleece inner earband. Constructed with an active fit, it?s ideal for casual trail outings on cold days. Knitted and Great mountain pattern knit in.100% acrylic knitted exterior. 100% polyester polar fleece inner earband for added warmth and next-to-skin comfort. Polygiene? Active Odor Control neutralizes odor and stops the growth of odor causing bacteria and fungi. Cold weather thermal protection : 14?f - 41?f. Embroidered BUFF? logo. One size fits most adults.