I love big days in the alpine, but have paid the sunburn toll a few too many times. When I know I will be out in serious UV, this is my trusted top. From spring ski mountaineering to summer scrambling, the Cormac is versatile and can act as a base layer to mid depending on the user and temps. A few examples:
1. Summer trail run. Acts as a base layer (no shirt under) that I can wear all day at low to moderate output.
2. Spring ski mountaineering. Layer with a merino shirt under and a puffy / shell on top as needed.
The only tweak I would make on this piece is to make it a bit more breathable, but that is personal preference. For most temps and most output levels, it is perfect to keep you protected from the sun.
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