As temperatures drop to near-freezing lows, we’re fully stocked with our blankets and space heaters. But sometimes, that’s not enough.
Some may think wearing layers is only suitable for the spring and fall seasons — but think again. Whether you’re skiing or simply need to keep warm on some days, long underwear and thermal layers will be your new BFF.
That’s why the New York Post shoveled through options for snowy weather to pile up the best long underwear and thermal layers online for you to shop.
Our list below carries easy-to-wear garments for both men and women, and it’s time to stock up now. While you’re at it, we recommend adding some cashmere sweaters, on-trend fleece-lined leggings and some scarves to your cart, too.
It’s that time of year, baby, and we’re committed to keeping you warm (you’re welcome).
Click any of the following links to shop this article by category:
- Best Women’s Overall
- Best Men’s Overall
- Best for Skiers and Snowboarders
- Best for Extreme Cold
- Best Lightweight
- Best Budget
- Best One Piece
- Best for Kids
Best Women’s Overall
Thermajane Women’s Long Johns Fleece-Lined Thermal Base Layer
Drumroll please — the Thermajane Women’s Long Johns Fleece-Lined Thermal Base Layer is one of the most coveted long underwear styles to pick up online. Featuring a whopping 38,000 rave reviews on Amazon (and counting!), we’re not at all surprised it’s a No.1 Amazon best-seller, either.
The best part? There’s a men’s version — Thermajohn — that we rounded up as one of the best below as well.
Best Men’s Overall
Bombas Men’s Cotton Modal Blend Long Underwear
The Bombas Men’s Cotton Modal Blend Long Underwear are our top pick for long underwear for men, namely for its breathable, tag-free, minimal-seam comfort that begins with its comfort-driven waistband. Not only are they said to feel like second skin but, if they’re anything like the brand’s socks, you have yourself an undeniable winner.
They’re reasonably priced, too, allowing this to be the only pair your wardrobe will need.
Best for Skiers and Snowboarders
Artilect Men’s Boulder 125 Legging
When skiing on the slopes, you want to ensure you have a base layer that’s warm but not too bulky or constricting (as they’ll be topped with your best ski pants). Fitting the bill is the Artilect Men’s Boulder 125 Legging, a splurge worth making.
Namely, the hyped-about long underwear comes in an array of sizes and colors and is made from superfine18-micron Australian merino wool (side note: doesn’t that simply sound divine?) and is soft against the skin to warm the body.
Alo Yoga Women’s Airbrush Winter Warm High-Waist Nocturne Legging
We love Alo Yoga for just about everything, and its Airbrush Winter Warm High-Waist Nocturne Legging is a surefire add-to-cart style. They have a true second-skin” feel, are buttery soft and boast a medium-compression fit — along with a soft, brushed interior — for the extra warmth you crave in cold weather.
Best for Extreme Cold
L.L.Bean Men’s Cresta Wood Ultralight 150 Pants
When we think of extreme cold, we think of wool. That said, there’s nothing more fitting to stock up on this cold-weather season than L.L.Bean’s Men’s Cresta Wood Ultralight 150 Pants.
Available in regular and tall sizes, these warm bottoms are made from 100% merino wool, are machine-washable and are especially apt for cold-weather sports. The best part? They’re a quality pair for less than $100.
Merino.tech Women’s 100% Merino Wool Base Layer
Also made from 100% merino wool, the Merino.tech Women’s 100% Merino Wool Base Layer are our top-pick for women. Nearly 1,500 satisfied shoppers feel the same, and they come in a true rainbow of colors (you’ll just have to visit Amazon to find out!)
They have a mid-weight feel, are super soft and comfortable and are machine-washable for your finest clean after being out in the cold.
Best Lightweight
32 Degrees Men’s Lightweight Baselayer Legging
We can’t believe the 32 Degrees Men’s Lightweight Baselayer Legging are only $7 right now and — while they’re not the warmest, wool-made option on this list, they’re great if you want another layer without feeling like you’re wearing another layer.
Impressively, they’re moisture-wicking, so you won’t have to worry about intensely sweating while sporting these bottoms. Its four-way stretch and anti-odor fabric are nice touches, too.
Bombas Women’s Cotton Modal Blend Long Underwear
Bombas isn’t only good for socks (though we love them). The Bombas Women’s Cotton Modal Blend Long Underwear are fairly priced, available in a few neutral colors and are breathable and tag-free (that’s right — no more seams and lumps showing!)
Their minimal-seam comfort is apparent all the way to the ankles — the ideal, full-coverage base layer for women that won’t feel too heavy on the body.
Best Budget
Thermajohn Men’s Thermal Underwear
Akin to our best overall pick, the Thermajohn Men’s Thermal Underwear is a true must-have for less than $25 on Amazon. They’re also a No.1. Amazon best-seller, have garnered nearly 4,000 gleaming reviews and are respected for their moisture-wicking properties that don’t compromise warmth.
American Trends Women’s Thermal Underwear Set
Another less-than-$25 purchase we adore? The American Trends Women’s Thermal Underwear Set, without a doubt. Not only will you be picking up some long underwear on a budget but you’ll be snagging a full set, much like your loungewear. Yes, please.
Best One Piece
Carhartt Men’s Classic Cotton-Poly Union Suit
Sometimes, you want an easy-slip onesie to help brace the cold (we get it). For that reason, we love the Carhartt Men’s Classic Cotton-Poly Union Suit. It’s suitably priced, hails from a brand we trust and won’t feel too thick or heavy when you’re ready to sport it up the ski slopes or down the campsite.
Free People Women’s Good Karma Long-Sleeve Onesie
As far as one-piece thermals go, we can’t recommend the Free People Women’s Good Karma Long-Sleeve Onesie enough. Yes, it’s a splurge, but this winter jumpsuit is perfect for your yoga sessions and running errands, too.
Oh, and you’ll be glossing over all its wondrous colors.
Best for Kids
Amazon Essentials Boys’ Thermal Long Underwear Set
The Amazon Essentials Boys’ Thermal Long Underwear Set is perfect for your winter wardrobe stock-up — a full-piece set that comes at an affordable price point. Not to mention, Amazon Essentials is one of our favorite of the retailer’s private brands.
L.L.Bean Kids’ Wicked Warm Mid-Weight Long Underwear
The L.L.Bean Kids’ Wicked Warm Mid-Weight Long Underwear are our top pick for kids, with its pattern and print assortment appealing to both boys and girls. They’re ideal for athletic events, too, along with anywhere you may frolic to this winter.
Check out the New York Post Shopping section for more content.