Heather Navy
Built for cold days in motion, the Flex Thermal baselayer delivers the warmth you need without sacrificing breathability or mobility. The ultra-soft brushed fabric feels comfortable next-to-skin while managing moisture to keep you dry during activity. With stretch built in and a engineered fit designed for layering, it moves naturally with your body whether you're outdoors, training, or navigating cold-weather days.
Fabric: 88% Recycled Polyester, 12% Spandex
The brushed recycled polyester interior provides soft warmth and moisture management, while spandex delivers high stretch, recovery, and support.
SHORT FEATURES
Free standard shipping is available on all orders above $75 (after discounts and before taxes).
All available shipping options will be visible at checkout. We ship orders within 1-2 business days, but this can increase during promotional periods.
We offer a 30-day return window for all purchases made directly through our website. To submit a return request, please use our online portal: returns.bn3th.com.
For more information, check out our Frequently Asked Questions page.
Mid-weight warmth, stretch, and breathable comfort. Built for cold weather layering.
Warmth
Stay Dry
No Stink
Chafe-Free
Features That Perform
HYBRID RAGLAN
Engineered with a hybrid raglan-back and front tailored cap sleeve construction to enhance shoulder mobility and allow for unrestricted movement.
UNDERARM GUSSET
A gusset extends under the arm to enhance mobility, reduce friction, creating an unrestricted fit.
BRUSHED WARMTH
Brushed 4-way stretch fabric creates a soft next-to-skin feel while helping trap warmth for comfortable cold-weather wear.
ENGINEERED COMFORT
WHY WE MADE THIS
SUSTAINABILITY MATTERS
