Altitude Spf40 4Oz Run The Pennant sock checks all

The Pennant sock checks all the boxes with its next-to-skin

Removeable liner makes it easy to adapt to different temperatures and activity levels

Layer the Liner Crew Wool with an outer sock for added cushion and protection

new stainless steel hardware fasteners

Altitude Spf40 4Oz Run The Pennant sock checks allHigh elevation skin exposure challenges the skin with extreme UV, and cold, dry air. This low moisture atmosphere environment robs the skin of water while cold dry winds chap and create windburn. UV intensity increases approximately 6% for every 1000 feet of elevation. Snow reflects up to 80% of UV. Combine the solar intensity or direct plus reflected UV and you can see why mountain environments present the highest UV exposure on earth. On snow, at