Gear Up with Earth's Best Merino Wool Hunting Long Johns - Where Innovation Meets Field-Proven Performance

Engineered to deliver the world’s most advanced thermal regulation system: Bamboo fiber rapidly absorbs moisture faster than any other natural material, then transfers it to ultra-fine 15.5µm Australian merino wool—the pinnacle of efficient evaporation technology.

Exclusive to Hillman, 15.5µm merino wool is a signature innovation, unmatched in performance and precision.

The combination of natural bamboo fiber and the finest merino wool leverages the unique strengths of each fiber. By combining their best qualities, this technology Amplifies performance by 50% compared to base layers made solely of merino wool.

Engineered to master sweat, moisture, and climate control, these merino-bamboo Thermal Base Layer Pants combine the best of both worlds to keep you warm in freezing conditions and cool when the action heats up.

Naturally odor-resistant, thanks to the antibacterial properties of merino wool, bamboo viscose, and advanced anti-odor threads, it ensures you stay fresh even during the most demanding hunts.

Versatile and technically advanced, they're designed to function as the ultimate next-to-skin underwear or as best-in-class base layer.

Perfect for thermoregulation in a range of conditions:

• 5°C (41°F) down to -30°C (-22°F): Works seamlessly paired with additional layers.

Part of Hillman’s 6-Layer System: For maximum efficiency, pair this base layer with Hillman’s 6-Level Layering System, the most advanced layering technology for hunting. 

Dominate the hunt with SYNERTECH™ Hunting Long Johns - Bamboo-Merino All-Season Technology - Engineered to Master Heat, Cold, and Everything Between

We craft our gear using the finest Australian merino wool yarns, expertly woven with 100% natural bamboo fibers through advanced interlock technology. The result? A second-skin layer designed for ultimate comfort and peak performance. These aren't just thermal base layer pants – they're your ultimate defense against the elements, unrivaled in the hunting world.

Engineered with antibacterial and anti-odor threads, this base layer keeps you fresh no matter how intense the hunt gets. Every detail is built to withstand the toughest conditions.

For those who refuse to settle for less, Hillman delivers. The Merino-Bamboo Thermal Base Layer Pants combines world-class fabrics with cutting-edge functionality, redefining what’s possible in the hunting industry. It’s guaranteed to outperform anything else on the market.

Now it's your turn to favor your body in the best way,

we guarantee there's no alternative. If for any reason

you don't like it - send it back, no questions asked!

Dominate the hunt, equipped with SYNERTECH -  technology that exceeds expectations and sets a new standard in the world of hunting apparel.

When you're out in the field, you need gear that performs as hard as you do. That's why we start with the finest merino wool yarns from Australia, weaving 100% natural bamboo fibers into it using advanced interlock technology. This creates a second-skin layer built for ultimate comfort and performance. It's not just thermal underwear—it's your secret weapon against the elements, unmatched in the hunting world.

The underarm and shoulder areas come seam-free, giving you maximum mobility and eliminating spots where bacteria or odor can take hold. Coats' antibacterial and anti-odor threads have your back.
With a built-in semi-glove feature, your hands stay protected from the cold. The ergonomic cut ensures a perfect fit, while the deep front zipper lets you control ventilation as conditions change. The laser-cut phone pocket keeps your essentials secure, and the world-class YKK zippers and precise flatlock stitching ensure every detail is ready for the toughest environments.

For those who demand the best, Hillman delivers. The MERINO-BAMBOO TIGHTS combines world-class fabric with cutting-edge functionality, setting a new standard in the hunting industry—guaranteed to outperform anything out there.

How did we create the most thermally efficient base layer on Earth?

Defined the 6 Goals:

• To develop the world's most efficient natural moisture management technology.
• To make a textile that absorbs and wicks moisture from the skin better than any other.
• To create chemical-free odor-elimination and antibacterial fabric for hunting.
• Design the coziest natural fiber clothing, crafted to be gentle, even on baby skin.
• Maximize thermal insulation by using the finest yarns, which trap significantly more air than the thicker yarns used by our competitors.
• To deliver a durable, long-lasting material you can trust.
  
  

What is SYNERTECH?

The synergistic technology developed by Hillman combines the best functionalities of two or more materials, achieving exponentially higher results than each material used separately. For example, we use bamboo fiber as the most efficient moisture absorber and merino wool as the most efficient wicking fiber.
In comparison, using the materials separately does not allow us to reach such a high-efficiency level for moisture absorption and wicking.

What happens if the clothing is made only of Merino wool?

Even when we use its best quality of 15.5 microns, the Merino wool structure is coarse and can only absorb 30% of its weight in moisture. Nevertheless, it stands out as the most effective moisture-wicking material on Earth.

What happens if the clothing is made only of Bamboo viscose?

Bamboo viscose is a natural antibacterial hollow fiber that absorbs moisture three times its weight, three times faster than cotton, and ten times better than wool. It can wick moisture faster than cotton but is less efficient than wool.

For example, bamboo will absorb your sweat much quicker than any other material, but you will still develop sweat spots, which will be fewer than cotton but still exist.
Also, bamboo fiber provides a silk-like, gentle feeling when in contact with the skin. It also allows heavy brushing for superior air trapping, better insolation, and a gentle fleecy feel.

The Final Result

Using natural chemical-free bamboo fiber as the best moisture absorber and the World’s finest possible grade 15.5-micron Australian merino wool as the best moisture-evaporation layer, we have exponentially higher moisture management and thermoregulation efficiency than any other material on Earth. Using the finest grades of materials, the gentle, cozy, itch-free, super functional fabric is now a reality. The plus is that both fibers are naturally antibacterial and anti-odor, making them the best synergy of natural fibers for hunting clothing ever.