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Quantity
1
SYNC Performance Technical Underlayer
The deluge collection is our lightweight base layer with a snug fit, laying against the skin designed to wear under your midweight or heavyweight layer. Our buttery soft jersey knit fabric will feel gre...
Reviews
5.0
9 ratings
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A little better, in every way
It's not made from unobtanium or alpaca wool, but compared to the usual synthetic baselayers, it's a little softer (sueded), a little stretchier, a little drier, and has been odor-free.
J
Jim · April 19, 2026
Excellent Base Layer
This is my second purchase of this shirt. It’s functional, comfortable and a good fit. It doesn’t stick to skin and it’s not too loose. Overall: excellent base layer.