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Quantity
1
FZN stands for Five Zero Nine, not frozen, and that’s exactly how you’ll feel in the 509 FZN Merino Pant. This base layer pant provides versatile midweight warmth with a high-performance Alpine Merino wool blend that’s naturally breathable,...
Reviews
5.0
9 ratings
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Nice fit.
Size is true
J
Jason · December 19, 2025
Super warm and cozy
Went ice fishing for 3 days. Had the top and bottoms on and was nice and warm.
K
Kyle · January 31, 2025
These feel awesome against the skin, non-irritating and you pretty much forget you are wearing these. Also keeps you warm on those colder days and yet cool enough on the warmer days
