As the cold weather approaches, finding the right pair of long johns becomes essential for everyone seeking comfort and warmth. With a wide array of brands available, choosing the best ones can often be overwhelming. Some brands stand out for their high-quality fabrics, durability, and design, making them favorites among consumers. Continue reading to discover our top picks for the best brands offering reliable and cozy long johns.
Illustration of long johns
Best brands of long johns in 2025
Smartwool
Smartwool is renowned as one of the top producers of high-quality long johns, particularly those made from merino wool, which offers excellent thermoregulation, comfort, and odor resistance. Their Classic Thermal Merino Base Layers, previously labeled as 250g, are highly versatile and ideal for various outdoor activities such as hiking, skiing, and cycling. Despite some users reporting shorter durability, Smartwool's products are generally praised for their soft, next-to-skin feel and flat seam construction to minimize chafing. The brand's emphasis on using less synthetic fabric enhances moisture-wicking performance, although it may affect durability. North America, where Smartwool is popular, accounts for a significant share in the base layer market, with the region expected to continue dominating through 2027.
Icebreaker
Icebreaker, a renowned brand in the outdoor fashion industry, is highly regarded for its high-quality long johns and base layers. With a brand awareness of 24% among outdoor fashion owners in the United States, Icebreaker is favored by 7% of U.S. outdoor fashion owners, and 29% of those who know the brand like it. The brand boasts a 6% usage share, indicating that 25% of those who know Icebreaker own its products. Notably, 67% of Icebreaker owners show loyalty by intending to purchase the brand again. Founded in 1995 by Jeremy Moon, Icebreaker is now part of VF Corporation, with global sales reaching NZD $227 million and distribution in 45 countries.
Patagonia
Patagonia is renowned as one of the best producers of long johns and baselayers, known for its commitment to sustainability and environmental responsibility. The company, founded in 1973, generates over $1 billion in annual sales and donates 1% of its sales to environmental conservation groups, amounting to over $140 million since 1985. Patagonia's products, such as the Capilene(r) Midweight and Capilene(r) Cool Merino baselayers, are made from recycled materials, with 98% of its product lines using such materials. The company's focus on sustainability has led to significant growth, with over 70 stores worldwide and a market share of nearly 10% in the outdoor apparel market. Patagonia's dedication to environmental causes, including using 100% renewable energy in its US facilities, further solidifies its position as a leader in sustainable clothing.
Under Armour
Under Armour is a leading producer of high-quality athletic apparel, including long johns, which fall under their performance gear categories such as ColdGear and TurfGear. These products are designed to provide comfort and performance, contributing to the company's strong market presence. As of 2024, apparel sales, which include long johns, account for approximately 66.5% of Under Armour's worldwide revenue. The company's global reach, with products sold in over 100 countries, and its strategic partnerships with athletes like Tom Brady and Stephen Curry, further solidify its position in the market. Under Armour's commitment to innovation, such as the launch of connected running shoes, also enhances its product offerings. For more details on their ColdGear base layers, visit Under Armour's ColdGear Base Layers.
Columbia
Columbia Sportswear is renowned for its high-quality outdoor apparel, including long johns, which are designed for comfort and performance. Known for their technical fabrics, Columbia's long johns feature waterproof and breathable materials, as well as fast-drying and moisture-wicking properties. As a leading seller of ski wear in the United States, Columbia's products are trusted by outdoor enthusiasts. The company holds a market share of approximately 2.27% in the apparel and footwear industry as of Q3 2024. Columbia's commitment to innovation and comfort makes their long johns a top choice for various outdoor activities. For more information, explore their collection on Columbia Sportswear.
REI Co-op
REI Co-op is renowned for producing high-quality base layers, including long johns, that excel in comfort, breathability, and sweat wicking. Their midweight base layers, such as the REI Co-op Midweight Base Layer Bottoms, are made from 92% recycled polyester and 8% spandex, ensuring durability and flexibility. These base layers are bluesign approved, indicating a commitment to environmental sustainability. They are available in various sizes, including regular, big, and tall, and are priced competitively, often significantly lower than name-brand alternatives. For example, the REI Co-op Midweight Base Layer Bottoms are priced between $37.93 and $54.95, offering great value for outdoor enthusiasts. Visit the REI Co-op base layers page to explore your options.
Carhartt
Carhartt, a renowned American clothing company founded in 1889, is highly regarded for its durable and high-quality workwear, including thermal underwear and long johns. Known for its heavy-duty materials and robust construction, Carhartt's products are favored by construction workers, farmers, and outdoors enthusiasts. The company's commitment to durability is evident in its use of heavy-duty thread, reinforcing rivets, and high-technology materials. Carhartt has successfully expanded its appeal beyond workwear to general street wear, with sales reaching approximately $600 million annually as of 2013. Its products are manufactured in facilities in the U.S. and Mexico, ensuring a blend of domestic and international quality.
Helly Hansen
Helly Hansen is renowned as one of the best producers of long johns and thermal underwear, with a rich history dating back to 1877 when Captain Helly Juell Hansen and his wife Maren Margarethe began creating water-resistant clothing. The brand's innovative LIFA® base layer, introduced in 1970, remains a cornerstone of their technical apparel, offering superior warmth and breathability. Helly Hansen's commitment to functional practicality has led to widespread adoption among elite athletes and outdoor professionals, with over 55,000 mountain professionals and guides in 200 ski resorts relying on their gear. The company's revenue has seen significant growth, with a 29% increase in 2018 to NOK 3.7 billion (US$425 million) and a four-year revenue CAGR of 16% from 2014 to 2018. Helly Hansen's global reach is substantial, with 80% of its revenue generated outside Norway.
Woolx
Woolx is renowned as one of the best producers of merino wool long johns, offering ultra-fine, lightweight, and breathable clothing that is both odor-destroying and quick-drying. With over 15 years of expertise and a 4.7/5 rating based on over 12,000 reviews, Woolx ensures durability and comfort, as evidenced by their baselayers remaining soft and sturdy even after 100 washes. Their merino wool, sourced from Australian Merino Sheep and Woolmark certified, provides excellent temperature regulation, keeping users warm in -28 degrees and cool in summer. The brand's commitment to customer satisfaction is highlighted by their strong customer support and a loyal customer base of over 100,000. Woolx's merino wool apparel is versatile, suitable for outdoor activities, everyday wear, and even sleepwear.
Terramar
Terramar is renowned as one of the best producers of long johns and base layers, offering high-quality products that excel in thermal regulation and comfort. Their Merino Pro series, for instance, incorporates traditional Merino Wool enhanced with innovative knit construction and Climasense technology, ensuring optimal performance and extra comfort. With a strong customer base, Terramar products have received excellent reviews, such as a 5.0 out of 5 stars rating from numerous customers who praise their soft, warm, and durable design. The brand's Heritage Series and Performance Series also cater to a wide range of activities and temperatures, making them a versatile choice for outdoor enthusiasts. Terramar's commitment to quality and customer satisfaction is evident in their average 4.7-star rating based on over 24,827 reviews. For more detailed information, visit their official website.
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