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Best Base Layers

From leading brands and best sellers available on the web.
#1

Winner

Thermajohn Long Johns Thermal Under

Thermajohn

33%OFF

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Thermajohn Long Johns Thermal Underwear for Men Fleece Lined Base Layer Set for Cold Weather (Small, Black)

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#2
Thermajane Long Johns Thermal Under

Thermajane

17%OFF

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Thermajane Long Johns Thermal Underwear for Women Fleece Lined Base Layer Pajama Set Cold Weather (Large, Black)

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#3
Merino.tech Merino Wool Base Layer

Merino.tech

20%OFF

Merino.tech Merino Wool Base Layer Mens Set - Midweight, Heavyweight, Lite Merino Wool Thermal Underwear For Men Top, Bottom (Large, 250 Black)

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#4
Amazon Essentials Men's Thermal Lon

Amazon Essentials

Amazon Essentials Men's Thermal Long Underwear Set, Black, Medium

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#5
Merino.tech Merino Wool Base Layer

Merino.tech

20%OFF

Merino.tech Merino Wool Base Layer Women Set - Midweight Merino Wool Thermal Underwear For Women Top and Bottom (Medium, 250 Black)

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#6
Cuddl Duds Womens Thermal Underwear

Cuddl Duds

25%OFF

Cuddl Duds Womens Thermal Underwear - Heavyweight Base Layer 2-Piece Set - Cozy Moisture-Wicking Long Johns - Winter Clothing - Boysenberry Purple - Large

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#7
Thermajane Thermal Underwear for Ki

Thermajane

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Thermajane Thermal Underwear for Kids Long Johns, Girls Thermal Underwear Set, Base Layer Kids Long Underwear (Grey, Small)

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#8
Under Armour Men's HeatGear Armour

Under Armour

14%OFF

Under Armour Men's HeatGear Armour Leggings , Black (001)/Pitch Gray, Large

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#9
TELALEO 5 Pack Men's Thermal Compre

TELALEO

20%OFF

TELALEO 5 Pack Men's Thermal Compression Shirt Long Sleeve Athletic Base Layer Top Winter Cold Gear Workout Running Hunting L

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#10
Merino.tech Merino Wool Base Layer

Merino.tech

44%OFF

Merino.tech Merino Wool Base Layer - Mens 100% Merino Wool Long Sleeve Thermal Shirts Lite, Midweight, Heavyweight + Socks (Large, Black 250)

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Buying Guide for the Best Base Layers

Choosing the right base layer is crucial for maintaining comfort and performance during outdoor activities. A base layer is the layer of clothing that sits closest to your skin, and its primary function is to manage moisture and regulate body temperature. When selecting a base layer, consider the type of activity you'll be engaging in, the weather conditions, and your personal comfort preferences. Here are some key specifications to consider when choosing a base layer:
MaterialThe material of a base layer is important because it affects moisture-wicking, breathability, and insulation. Common materials include synthetic fabrics like polyester, natural fibers like merino wool, and blends. Synthetic fabrics are great for high-intensity activities as they wick moisture quickly and dry fast. Merino wool is excellent for temperature regulation and odor resistance, making it suitable for a range of activities and conditions. Choose a material based on your activity level and the climate you'll be in.
WeightBase layers come in different weights: lightweight, midweight, and heavyweight. Lightweight base layers are best for high-intensity activities and warmer weather as they provide minimal insulation but excellent moisture management. Midweight base layers offer a balance of warmth and moisture-wicking, suitable for moderate activities and cooler conditions. Heavyweight base layers provide maximum insulation and are ideal for low-intensity activities in cold weather. Select the weight based on the intensity of your activity and the temperature you'll be facing.
FitThe fit of a base layer affects its performance in moisture management and insulation. A snug fit is essential for effective moisture-wicking and to prevent chafing during movement. However, it should not be too tight to restrict movement or cause discomfort. Consider a form-fitting base layer for high-intensity activities and a slightly looser fit for low-intensity or casual wear. Your personal comfort and the type of layering system you plan to use will guide your choice.
SeamsSeams in a base layer can impact comfort, especially during extended wear or high-movement activities. Flatlock seams are designed to minimize chafing and irritation, making them ideal for active use. Look for base layers with minimal or strategically placed seams to enhance comfort. If you plan to wear your base layer for long periods or during vigorous activities, prioritize those with flatlock seams.
Odor ControlOdor control is an important feature for base layers, especially during multi-day activities or when you have limited access to washing facilities. Some materials, like merino wool, naturally resist odors, while synthetic fabrics may be treated with antimicrobial treatments to prevent odor buildup. If you are engaging in activities where you will sweat a lot or be unable to wash your clothes frequently, consider a base layer with good odor control properties.