No matter what you like to do for outdoor fun, dressing appropriately is the key to maximum enjoyment. In extremely cold temperatures, a good base layer is fundamentally important, followed by layers that provide moisture protection, comfort, and mobility.
The base layer, or the first piece of clothing you put on when dressing for the cold, has the greatest impact on your ability to stay dry and unencumbered in freezing temperatures. Because it’s such a critical component of your outfit, choosing the best base layer for extreme cold requires calculated planning based on a variety of different factors.
This guide will outline the factors to consider when selecting the best base layer for your environment and favorite outdoor activity. Regardless of what you like to do and where you like to do it, FORLOH’s comfortable and breathable base layers are the perfect foundation for a cold-weather layering system.
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Why Layering Matters in Extreme Cold
Wearing a singular, bulky clothing item to stay warm in extreme cold can restrict your movement and provide inadequate insulation. Layering your hunting clothes solves this problem by incorporating multiple garments into your outfit for greater flexibility, moisture management, and temperature control.
The layering system consists of:
- Base Layer: In particularly cold weather, your body’s sweat can cool you to dangerously low temperatures, potentially resulting in hypothermia. Your base layer prevents this from happening by wicking perspiration away from the skin where it can evaporate easier. For this reason, we recommend base layers made out of synthetic fabrics (think polyester or nylon) or Merino wool, both of which are known for their moisture-wicking properties. Avoid base layers made of cotton, as they retain moisture.
- Mid-Layer: The primary purpose of the mid-layer is to insulate everything underneath it by trapping your body’s heat. Your mid-layer should be stored separately and worn after you’ve cooled down from strenuous activity. Down vests are a popular choice for mid-layering because they’re easy to store, take off, and put on without restricting movement.
- Outer Layer: The outer layer is the final piece of the layering system. Think of it as a first line of defense against the elements, directly responsible for protecting you from wind, snow, and freezing temperatures. For this reason, consider cold weather hunting gear like jackets, pants, socks, and gloves that are constructed from durable, waterproof materials.
What to Consider When Choosing a Base Layer for Extreme Cold
There are several factors to consider when selecting the best base layer for extreme cold. Here's what to look for.
Material
The material your base layer is made out of directly affects its (and your) performance. Choose materials like wool, synthetics, or wool blends that are breathable and warm and that don’t retain moisture or compromise comfort.
Merino Wool
More expensive than synthetic fibers, Merino wool fibers are fine and tightly woven, providing superior breathability. Not only does wearing a wool base layer provide greater odor control when hunting, but it also regulates your body’s temperature better.
Synthetic
While synthetic fabrics like polyester and nylon are more durable and quick-drying than wool, they’re not as soft and retain odor over time.
Wool Blend
Wool-synthetic blends offer a middle ground for those who want to incorporate the benefits of both materials into their base layer. They’re typically less expensive than Merino wool alone, infusing outfits with budget-friendly durability and moisture-wicking benefits.
Insulation
Your base layer’s weight is directly responsible for temperature regulation in extreme cold. Thinner fabrics generally provide less insulation, while heavier fabrics trap your body’s natural heat better, making you feel warmer. When choosing your base layer, consider different weights for different temperatures. If you’re taking a walk outside in the fall, perhaps you only need a midweight or lightweight base layer. Hunting in the dead of winter, on the other hand, calls for a heavyweight base layer.
Fit
Since your base layer makes direct contact with your skin, it should fit your body snugly—not too tight that it restricts movement, but not too loose that it loses its moisture-wicking abilities. Most outdoor activities require a full range of motion, so keep this in mind when sizing your base layer.
Durability and Maintenance
In addition to withstanding freezing temperatures, the best base layer for extreme cold will also be able to endure wear and care. Especially if you’re rough with your gear or frequently engage in physically demanding outdoor activities, give special consideration to synthetic fabrics that are more durable than wool. Extend the lifespan of your base layer by washing your hunting clothes properly. Always follow the manufacturer’s care instructions, typically located on the garment’s tag.
Features
Additional features you may want to consider for added utility and convenience include:
- UPF protection
- Scent control
- Color options and camouflage patterns
- Hood
- Thumb loops
- Pockets
- Eco-friendly manufacturing practices and materials
Comparing Different Base Layer Materials
Merino Wool
Pros: Merino wool is celebrated for its excellent insulation properties, which help regulate body temperature in both cold and warm conditions. It effectively wicks moisture away from the skin, keeping you dry during physical activities. Additionally, Merino wool is naturally odor-resistant, allowing you to wear it longer without developing unpleasant smells. This is especially ideal for hunting, an activity that requires hunters to stay undetectable from their prey.
Cons: Merino wool tends to be more expensive than its synthetic alternatives, which can be a consideration for budget-conscious buyers. It also requires gentle care, as it can shrink or lose its shape if washed improperly.
Synthetic Fibers (Nylon/Polyester)
Pros: Synthetic fibers such as nylon and polyester are highly effective at wicking moisture away from the body and drying quickly, making them popular choices for active wear. They are generally more affordable than natural fibers, providing a budget-friendly option for those seeking performance-oriented clothing.
Cons: These materials may retain odors more easily, which can be a drawback after vigorous activity. Additionally, they often lack the breathability found in natural fibers like wool, potentially leading to discomfort in warmer conditions.
Fleece
Pros: Fleece is known for its ability to trap heat effectively, offering warmth without being overly heavy. It is a popular choice for layering in colder climates, providing insulation without bulk.
Cons: Fleece is not wind-resistant, which means it may not provide adequate protection in breezy conditions. Moreover, it tends to attract dirt and lint, requiring more frequent cleaning to maintain its appearance.
Blended Fabrics
Pros: Blended fabrics combine the advantages of different materials, such as a mix of wool and synthetic fibers, to create versatile clothing options. These blends can enhance performance by offering both warmth and moisture-wicking properties, catering to a variety of needs.
Cons: The effectiveness of blended fabrics can vary significantly depending on the specific combination of materials used, leading to mixed results in terms of breathability and durability. It’s important to consider the specific blend to ensure it meets your performance requirements.
Trizar
Certified by NASA, FORLOH’s exclusive Trizar™ material is engineered to optimize the benefits of wool, synthetic fibers, and blends for maximum cold-weather performance. It does so by capturing the infrared heat produced by your body and re-radiating it, creating a zone of personalized comfort and warmth. Trizar™ gives its wearer a full range of motion without bulk. Its certified space technology is tested for its:
- Superior moisture protection and breathability
- Insulative warmth
- Bacteria and odor elimination
Top Picks: Best Base Layers for Extreme Cold
FORLOH’s line of Deep Space base layers is designed for maximum warmth, breathability, scent control, moisture protection, and comfort. Best of all, each garment is 100% designed, sourced, and manufactured in the USA. When you purchase from FORLOH, you’re investing in superior American craftsmanship. Check out our top picks for the best base layers in extreme cold below.
Best Men’s Base Layers
Men’s Deep Space Base Layer Crewneck Top
- Voted “Best in Hunting Kit” by Outside Winter Buyer's Guide for 2022
- Polygiene® scent control technology
- Lightweight and strong
Men’s Deep Space Base Layer Pants
- Double anti-microbial protection
- Polyester/Spandex blend 87%/13%
- Features Trizar™ NASA Certified Space Technology for unbeatable warmth
Featured Gear: Men's ThermoNeutral Down Vest, Men's Deep Space Base Layer Crewneck Top
Best Women’s Base Layers
Women’s Deep Space Base Layer Longsleeve Top
- UPF 100 for UV protection
- Designed by women for women
- 4-way stretch and full side zip seam construction for fitted mobility
Women’s Deep Space Base Layer Bottoms
- Midweight insulation
- Polyester/Spandex blend 87%/13%
- Crafted with moisture and scent control technology
Best Kids’ Base Layers
Youth Deep Space Base Layer Longsleeve Top
- Constructed with the same high-performance warming and drying technology as the adult version
- UPF 100 for ultimate protection from the sun
- Combines Polygiene® Stay Fresh technology with Polygiene® OdorCrunch to eliminate foreign odors as well as those caused by bacteria
Youth Deep Space Base Layer Bottoms
- Polyester/Spandex blend 87%/13%
- Constructed with our industry-exclusive Trizar™ technology for one-of-a-kind temperature regulation
- Midweight protection with 4-way stretch
Complete Your Cold Weather Layering System
Your cold weather layering system isn’t complete without a mid-layer, outer layer, and accessories for your hands and head.
Men's Merino Hi-Loft Insulator Vest
Made with Merino Hi-Loft wool batten insulation, this versatile vest is the perfect mid-layer for environments with unpredictable or varied temperatures.
Men’s AllClima Softshell Jacket
This award-winning shell jacket is as quiet as it is weatherproof, making it an ideal outer layer for your cold weather layering system.
AllClima Softshell Gloves & AllClima Softshell Beanie
Experience the dexterity and warmth of FORLOH’s AllClima softshell gloves and beanie. Constructed with the same technology and purpose as our Deep Space base layers, these accessories complete your cold weather layering system with unbeatable hand and head protection.
Base Layers FAQ
What is the best base layer material for extreme cold?
For extreme cold, look for base layers made with advanced thermal materials that provide excellent insulation while maintaining moisture-wicking properties. FORLOH’s Deep Space base layers stand out for their exceptional comfort and performance, allowing you to minimize additional mid-layers in temperatures ranging from 30-50°F. Additionally, our American-made products are backed by strong warranties, making them a top choice for hunters and outdoor enthusiasts alike.
Should base layers fit tight or loose?
Base layer fit is largely a matter of personal preference and intended use. For optimal performance, aim for a snug but not restrictive fit. Tighter layers can help minimize cold air circulation, while slightly looser layers can improve breathability. When hunting or engaging in outdoor activities, choose a fit that allows comfortable movement without excess fabric bunching or restricting motion.
How many base layers should I wear in extreme cold?
In extreme cold, you should wear only one base layer directly against your skin. A quality base layer creates a warm air pocket and effectively wicks moisture away from your body. Avoid wearing additional layers underneath, as this can impede the base layer's moisture-management capabilities. For women, a moisture-wicking sports bra can be worn with the base layer without compromising its performance.
Can I wear a base layer alone in mild weather?
Yes—the best, warmest base layer will be versatile enough to be worn as a standalone garment during spring, summer, and fall. Base layers from FORLOH excel at regulating body temperature and managing moisture during physical activities. Our base layers also include UPF sun protection, making them ideal for outdoor use. When wearing a base layer alone, remember to apply body sunscreen to exposed areas like your neck, hands, and face.