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Quantity
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The Alpha Core SL Base Layer stands out for its exceptional warmth-to-weight ratio and its ability to resist wet weather. It's crafted with Polartec Alpha-Direct insulation, which retains warmth even when wet. This breathable, recycled fabr...
Reviews
5.0
6 ratings
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Great layer under merino base layer to add aome core warmth. Im 6’ 180 lbs. XL fits perfect.
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Daniel · February 28, 2026
The most comfortable, temperature regulating base layer i have ever oned. I bought four.
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DOUGLAS · March 1, 2026
I haven’t used it yet we don’t have cold weather right now at this moment, but I think it’s gonna be just fine. Fits true to size looking forward to using it when I have to definitely worth it.