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'Toasty and warm': Shoppers adore this cozy thermal underwear set and it's only $28 right now

Listen, we know thermal underwear isn't exactly the sexiest purchase — but it's definitely among the snuggliest and most useful. Now that the winter chill has set in, there's no wardrobe item you'll appreciate more than soft, comfy thermals. By day, they're a perfect under-layer; by night they're juuuuust right for lounging and sleeping. Is your closet ready for the cold? If not, we've got the answer: the Weerti Thermal Underwear set, marked down from $40 to as low as $28 right now, thanks to Amazon's wonderful Winter Sale.

Thin yet warming, insulating but "buttery soft," these microfiber long johns are just the ticket for fending off the chill. 

$28 at Amazon

Why is this a good deal?

With the savings on this Weerti Thermal Underwear set starting at 25% — the sale price varies depending on color and size — you're definitely scoring a good deal. This is almost the lowest price this pair has been this year, and we doubt it'll dip much lower as temps continue to drop.

Why do I need this?

Once you have a great set of long johns, you'll wonder how you ever lived without it. The Weerti set is comfortable all day. It's fits like a second skin, minimizing heat loss without weighing you down with heavy fabric. And speaking of the fabric, this isn't one of those itchy-scratchy raw-wool endurance tests; Weertis are made of lightweight microfiber (and a touch of Spandex). They're super-soft, breathable, and fleece-y on the inside. Strong stitching guards against snags and tears.

You can choose from six colors and find your perfect fit with a size range from XXS to 3XL. Savings vary depending on color and size — you'll score the best deal with gray or purple.

woman wearing purple long johns and gray long johns
The base layer your winter body is craving, Weerti thermal underwear is now nearly 30% off! (Photo: Amazon)

What reviewers say

More than 7,500 Amazon shoppers have given this Weerti Thermal Underwear set a perfect five-star rating, with many calling out the loungers' warmth, comfort and value. "I think these thermal underwear are the best I've ever worn," raved one reviewer. "They are very soft and boy, do they keep you toasty and warm."

"This fabric is so soft it feels like butter, but it retains its shape and is stretchy enough," added another customer. "It fit very well except the pants were a little bit long, but I’m pretty short (5 ft. 2 in.) so that’s not a big deal. I definitely recommend [these] to wear under your regular clothes to keep you warm in cold climates."

"I absolutely love these," gushed a third shopper. "They are buttery soft and thin, yet keep your body warm. Wore them under jeans and a sweatshirt to a 40 degree football game at night and was never once cold,"

Purple and gray are on the deepest discount, but this set is also available in navy, red, black and white.

$28 at Amazon

The reviews quoted above reflect the most recent versions at the time of publication.

If you have Amazon Prime, you’ll get free shipping, of course. Not yet a member? No problem. You can sign up for your free 30-day trial here. (And by the way, those without Prime still get free shipping on orders of $25 or more.)

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