Alaska’s microclimates already give weather reporters heartburn, but get close to Mount Blackburn – the Wrangell Mountains’ highest peak – and all bets are off. Glaciers, valleys, lakes and shifting winds mean a good set of layers is the only way to come prepared. Blackburn mid layers make the versatile, ready-for-anything core of the rest of your kit. That’s because they offer exceptional wicking and enough warmth to keep you comfortable under a heavy shell or on their own in daily bone-chilling weather. The channeled interior holds more heat, while the smooth face won’t catch on a shell or coat as you get ready. Layer up with yours and show the mountains what Blackburn is all about.