Simms' Lightweight Baselayer Bottom is the essential next-to-skin layer for building a rock-solid foundation that prioritizes all-day mobility, warmth and wicking.
Quick-dry, jersey knit polyester combined with sustainable odor control f...
Reviews
4.6
7 ratings
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Must have base layer
I wore my last pair so many times I had to get another pair. They warmer then they look without the bulk!
C
Chad · February 3, 2026
Lightweight base layer
Too large. Back of the waist is always dropping to low. Struggle to keep at waist.