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The benchmark heavyweight base layer for sub-zero conditions.
The BlackStrap® Therma Men’s Base Layer Crewneck is built for the coldest mornings. When the alarm goes off at 4 a.m., the sleds are loaded and you’re heading out to find a new zone before sunrise, you’ll want Therma on your back. It has a relaxed fit and is designed to retain maximum warmth. The Therma base layer will keep your blood flowing on those frigid starts into the unknown. Step out of the nice warm car with confidence – there’s powder to be found.
Features
· Classic heavyweight crew neck with regular fit.
· THERMA fabric is a midweight cold killer with a soft, brushed feel against the skin.
· Ventra system lets air flow where your body sweats the most.
· Thumb holes, flatlock seams, and a tapered drop hem front and back.
· Dri-Flo (moisture wicking), 4-way stretch, quick-drying, thermal regulating, odor-free, lens safe, SpectraUV (UPF 50+), finished seams.
· Machine washable and dryer safe.
Fabric technology
Polar vortex incoming? No worries, we’ve got you covered! Meticulously crafted by BlackStrap, THERMA is a midweight fabric that protects you from sub-zero temperatures. This fabric offers 4-way stretch for maximum mobility, dries quickly, has a soft hand against the skin, and provides thermal regulation to ensure your body retains its heat while you move. Therma is also machine washable and dryer safe, moisture wicking, lens safe, offers SpectraUV sun protection (UPF 50+), and is odor-free.
Functional technology
SPECTRA UV:
All BlackStrap fabrics have been tested to Solar Light Company standards to ensure the highest UV protection on the market, 98% (UPF 50+).
DRI-FLO:
Unlike traditional fabrics that trap sweat between your skin and the garment, causing heat and discomfort, BlackStrap’s Dri-Flo system is a moisture-wicking technology designed to ensure sweat evaporates off the skin, allowing optimal temperature regulation.














