Merino Heated Baselayer Shirt Men's - Black

Ergonomic Power, Smart Control
The 3.7V Micro BT Batteries are custom-designed for heated socks, featuring a curved ergonomic shape that fits comfortably along the outside of the calf. With built-in Bluetooth connectivity for use with our MW Connect® App, plus a Micro USB charging port and LED battery life indicator, these compact batteries deliver smart, streamlined warmth right where you need it.

Power Where You Need It
Our battery pocket is designed for seamless integration with your heated gear. These secure, low-profile pockets keep your battery packs in place for optimal comfort and performance—so you can move freely while staying warm all day long.

Boot-Ready Access
Zippered ankle openings make it easy to slide over bulky boots, layer up, or quickly ventilate—designed to keep your setup fast, functional, and frustration-free.

Stay Dry, Stay Comfortable
Our moisture-wicking liner pulls sweat away from your skin to keep you dry and comfortable in any condition. Whether you're on the move or layering up, it helps regulate temperature so you never feel soaked or chilled.

Powerful Warmth, Precisely Delivered

Mobile Warming® Heating Technology uses ultra-thin, flexible heat pads powered by lightweight rechargeable batteries. Strategically placed throughout the garment, these pads deliver consistent, adjustable warmth at the touch of a button—so you stay comfortable in any condition, without the bulk.

Bluetooth Control at Your Fingertips

MW Connect® Bluetooth Control Technology lets you wirelessly manage your heat settings right from your smartphone or smartwatch. Adjust temperature levels, monitor battery life, and customize your comfort—anytime, anywhere.

Static-Free Comfort

Zapsheer™ Technology integrates conductive fibers into the fabric to safely dissipate static electricity. It reduces static cling and minimizes the risk of sparks, making it ideal for both everyday wear and electrostatically-sensitive environments.

Stay Fresh, Longer.

Odorsheer™ Technology fights odor at the source with advanced antimicrobial properties woven into the fabric. It keeps your gear smelling fresh, even after extended wear—so you can focus on the adventure, not the laundry.

Moisture-Wicking Comfort That Keeps You Dry
Sweatsheer™ Technology uses advanced polyester mesh to pull sweat away from the skin and speed up evaporation. Built for active performance, it keeps you dry, comfortable, and focused—no matter how hard you push.