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BestReviews spends thousands of hours researching, analyzing, and testing products to recommend the best picks for most consumers. We only make money if you purchase a product through our links, and all opinions about the products are our own. Read more  
BestReviews spends thousands of hours researching, analyzing, and testing products to recommend the best picks for most consumers. We only make money if you purchase a product through our links, and all opinions about the products are our own. Read more  
BestReviews spends thousands of hours researching, analyzing, and testing products to recommend the best picks for most consumers. We buy all products with our own funds, and we never accept free products from manufacturers.Read more 
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Pros
Cons
Best of the Best
Fruit of the Loom Women's Micro Waffle Premium Thermal Set
Fruit of the Loom
Micro Waffle Premium Thermal Set
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Trusted Brand
Bottom Line

A classic design, this set provides warmth and comfort when you need it, and it earns our fitness expert's praise.

Pros

Made from a blend of polyester and cotton, this thermal set is comfortable and keeps the heat in during the winter months. Great for wearing as a sleep set or underneath winter clothes, this set is machine-washable when you’re ready to refresh it and is made with a tag-free label for an itch-free wear.

Cons

Other shoppers commented that this thermal set runs a little small in size. If you don’t want these to be too tight, order a size up.

Best Bang for the Buck
Amazon Essentials Womens Waffle Pajama Set
Amazon Essentials
Women's Waffle Pajama Set
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Casual Pick
Bottom Line

Our fitness expert recommends the Amazon Basic thermal wear set for its waffle-knit textures and breathable feel.

Pros

Waffle-knit texture offers a snug and cozy feel, so it can double as pajamas or a base layer. Crafted out of a polyester and cotton blend. Retains body heat during chillier temperatures. A more lightweight option for those who don't enjoy bulkier winter clothing.

Cons

Not as flexible as some other brands, so users should make sure they order the right size.

Thermajane Long Johns Thermal Underwear
Thermajane
Long Johns Thermal Underwear
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Customer Favorite
Bottom Line

Available in a variety of small and plus sizes, this fleece-lined base layer set is appreciated both among customers and our fitness expert.

Pros

Specialized to prevent heat from escaping, keeping you at the same temperature throughout the day. Spandex materials prevent the fabric from snagging or losing shape. Thin yet effective, making it an excellent base layer under most winter outfits. Available in a variety of colors and sizes.

Cons

Some complaints about the pants pilling easily.

American Trends Thermal Underwear Set
American Trends
Thermal Underwear Set
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Best for Outdoor Use
Bottom Line

The specialized moisture-wicking fabric of this thermal underwear set will keep you warm and dry during a variety of activities.

Pros

Heavy-duty option for those searching to perform outdoor sports or chores. Delivers full coverage of the torso and arms thanks to the crew neck design. Double seams ensure that threads don't run loose and the fabric remains smooth against your skin. Offered in multiple sizes and colors.

Cons

Legs are shorter than some users had expected.

9M Clothing Company Thermal Base Layer Set
9M Clothing Company
Thermal Base Layer Set
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Most Versatile
Bottom Line

From high-speed skiing to lounging indoors, this fleece-lined set serves as a cozy base-layer set.

Pros

Microfleece material maximizes insulation to keep body heat. Stick to the skin, making them seamless underneath your regular clothes. Moisture-wicking fabric prevents unpleasant sensations from snow or sweat. Flexible, breathable, and silky.

Cons

Some concerns with the durability of the clothing.

HOW WE TESTED

We recommend these products based on an intensive research process that's designed to cut through the noise and find the top products in this space. Guided by experts, we spend hours looking into the factors that matter, to bring you these selections.

57
Models
Considered
130
Consumers
Consulted
8
Hours
Researched
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