Essential Winter Base Layers on Amazon for Staying Warm in Cold Climates
For those who are perpetually chilly, especially in colder regions, investing in quality winter base layers is a non-negotiable part of your wardrobe. From thermal undershirts and long johns to cozy socks, these items are designed not only for outdoor activities in frigid temperatures but also for keeping you comfortable at home, potentially reducing your reliance on the thermostat. If you're looking to stock up on base layers to brave the chilly months, Amazon offers a wide variety of options under $50 for both men and women. We've curated some of the best picks, highlighting why reviewers consistently praise them.
1. Cuddl Duds Women's Thermal Set
You might already be familiar with Cuddl Duds for their adorable loungewear, but did you know they also produce popular and remarkably affordable base layers? This thermal set is crafted from a cozy synthetic fabric with a brushed interior and a soft, textured exterior. The dense knit provides superior UV protection. Available in women's sizes XS-XXL, it's a versatile choice for skiing, everyday wear, or even under scrubs in a hospital setting. A reviewer named Sarah F. noted, "This was a great value. The fabric feels high quality and soft to touch. The warmth is just the right amount."
2. Alvada Merino Wool Hiking Socks Three-Pack
Feet can lose heat rapidly in cold weather, making warm socks like these Merino wool ones by Alvada a crucial base layer. Available in 15 colorways and gender-neutral sizes XS/S-L/XL, these socks are ideal for hiking but suitable for various cold-weather activities. Features include a no-slip cuff, reinforced heel and toe, footbed cushioning, and moisture-control fibers to prevent sweating. They are machine-washable but should be air-dried to avoid shrinkage. Thomas M. shared, "My feet are very warm and they don’t even sweat in these socks... I will definitely be purchasing more."
3. Mock-Neck Top for Cold Weather
This mock-neck top, available in sizes XS-4XL, features a double-layered synthetic fabric that's brushed for interior softness and has a silky-smooth exterior. Designed for comfort and movement, it includes flexible underarm panels and four-way stretch. Vicki L. Shellen commented, "Warm and fitted but not compression... works great under sweaters and shirts in cold weather."
4. Fruit of the Loom Men's Thermal Tops
A bestseller from Fruit of the Loom, these long-sleeved thermal tops come in one- or two-packs with a waffle texture and crew neckline. Available in four neutral colors and men's sizes S-5X, they prioritize comfort with moisture-wicking, heat-retaining properties, and a tagless label. Note that this product includes only the shirt, not a full set.
5. Indera Thermal Shirt with Tall Sizes
Similar to the Fruit of the Loom option, this Indera thermal shirt offers a traditional waffle pattern, crewneck, and tagless label in one- or two-packs. It stands out with a wider size range from S-6X, including tall sizes (reviewers recommend sizing up). While not the warmest on its own, it excels as a base layer under other clothing. Maxwell, a tall shopper, said, "These were a warm lifesaver if you work out in the cold all day."
6. Baleaf Fleece-Lined Leggings
Known for their quick-dry hiking pants, Baleaf also offers these fleece-lined leggings, which can serve as a base layer under other clothes. High-waisted with a V-shaped waistband, they are water-resistant, have two pockets, and are designed for temperatures below 40 degrees. Available in four colors and sizes XS-XXL, reviewer Ina praised, "They’re really warm... I’ve had them on in 20° weather and still comfortable."
7. SmartWool Merino Wool Top
Founded by ski instructors, SmartWool is renowned for high-quality, warm goods. This long-sleeved base layer is made from 100% Merino wool, offering natural antimicrobial properties, moisture-wicking, and temperature-regulating insulation. Available in sizes XS-XL and 27 colors, it's a premium option. D.Owens noted, "Excellent quality, and expensive!!... the value is clearly worth every penny."
8. Women's Thermal Underwear Set with Compression Fit
Ideal for running or other cold-weather exercises, this women's thermal set includes a long-sleeved shirt and leggings with a compression fit to enhance blood flow and circulation. Stretchy, moisture-wicking, and designed with fewer seams for comfort, it comes in sizes XS-XXL and seven color combinations. Dedicated71 shared, "I was surprisingly not cold!!!... Definitely a must buy!!!"
9. Men's Thermal Underwear Set with Turtleneck Options
This men's set features a sporty look with fleece lining, moisture-wicking fabric, and wrist closures to lock in heat. Resistant to pilling, fading, and shrinking, it offers a choice between crew neck or turtleneck styles. Available in various colors, camo patterns, and sizes XXS-6XL.
10. Hot Feet Ultra-Thick Socks
Available in a two-pack (under $30), these Hot Feet socks come in fun colors and patterns like gingham. They are exceptionally thick and warm, with a brushed inner lining for softness and heat retention. Machine-washable and designed to fit men's shoe sizes 6-12.5, the brand even suggests wearing larger boots for the best fit.
11. Weerti Women's Thermal Underwear Set
With 4.5 stars across 11,000 reviews, this Weerti set is fleece-lined, machine-washable, and features a four-way stretch, moisture-wicking fabric, and a snug fit. It comes in exciting colors like wine red, in addition to neutrals, and sizes XXS-3XL. Debbie Mc said, "These are great for providing warmth under your clothes... stayed toasty warm out in the elements all day!"
12. Insulated Boot Socks for Extreme Cold
To prevent frozen feet, these thicker-than-normal socks have a soft, brushed inner and are made with extra-thick yarn and deep cushioning for warmth and comfort. Suitable for outdoor adventures or indoor coziness, they come in five colors and patterns, with two size options. Kathleen remarked, "They are fantastic and comfortable and my feet are always nice and toasty."
13. Carhartt Moisture-Wicking Midweight Pants
These synthetic pants from Carhartt offer moisture-wicking, quick-drying, and odor-resistant properties. Designed for comfort with flatlock seams, a brushed elastic waistband, and a contoured fly, they are available in men's sizes S-4XL. Shayne praised, "So far these are the most comfortable and warm thermals I’ve owned to date!"
In summary, Amazon provides a diverse selection of winter base layers under $50, catering to various needs from outdoor activities to indoor warmth. By choosing items like thermal sets, wool socks, and fleece-lined leggings, you can stay comfortable and cozy throughout the cold season, as evidenced by positive reviewer feedback.
