Search  for anything...

LAPASA Men's Thermal Underwear Set Soft Fleece Lined Long Johns Light/Mid/Heavy Weight Base Layer Top & Bottom M11/M24/M57

  • Based on 12,365 reviews
Condition: New
Checking for product changes

Buy Now, Pay Later


As low as $9 / mo
  • – 4-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

This item is eligible for return within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Monday, Dec 23
Order within 21 hours and 56 minutes
Available payment plans shown during checkout

Special Size Type: Thermoflux 300 Heavyweight


Size: X-Large


Color: Navy Blue


Department ‏ : ‎ mens


Date First Available ‏ : ‎ May 17, 2023


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Dec 23

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • This photo is not this item!
Special Size Type: Thermoflux 300 Heavyweight Size: Large Color: Dark Red
After seeing this photo, this is what I was expecting. My fault, I neglected to read the entire 12 paragraph review where the reviewer stated "item for comparison". Photos of other items should be prohibited in reviews, as they are easily mistaken for actual item. That said, I give the long johns a 5 star review. Very warm, super comfortable, neck/sleves and wrists well tailored. Waist while wel made, thin which I like, was a bit big. If you're not concerned with color, you can purchase shirt and pants separately so they are sized correctly for your body. And if you shop the sales you can save some money. I will buy these again. ... show more
Reviewed in the United States on January 3, 2024 by john john

  • So comfortable
Special Size Type: Thermoflux 300 Heavyweight Size: Medium Color: White
I got 3 pair of these. As soon as I opened the first pair I was impressed and knew rifgt away they would be warm and comfortable. I don't know how long they will last but I assume they should be durable as even cheap thermals I bought years ago are still fine. These fit great. And look very nice and kept me warm outside in about 40-50 degrees (F). I will probably buy another few pair so I can use them everyday during the winter months. I got the heaviest weight (thermo flux). I am very happy. ... show more
Reviewed in the United States on December 19, 2023 by Random Dude

  • Warmest Base Layer Ever
Special Size Type: Thermoflux 300 Heavyweight Size: Medium Color: Heather Blue
I am always cold. If the temperature is below 60F, I start having difficulty regulating my body temperature. I have spent more money on various "warmest rating" outerwear and base layers than I care to think about and nothing seemed to cut the cold of midwest winters...until these. I was so impressed with the performance of these that I now own four sets of the thickest/warmest ones as well as two of the mid-weight shirts for when I need a bit of added warmth but not a full set of base layers. I spent 16 hours insulating an attic while it was 19 degrees outside in just these with a sweatshirt and pants over them and I was never cold at ALL. They're also great for doing outdoor winter projects. Sizing/fit: Across the four sets that I now own, there is some slight size variation but not enough that I would order anything but my usual size. The navy blue set runs a tad short/small but it works just fine. I believe these generally fit very true to size. These have a lot of stretch for ease of movement and don't fit as snug as many base layers do. I like that. If you're on the fence about size, unsure whether to buy your usual size or size up, I would suggest your usual size. Bottom line: if you're on the fence and wondering if this will just be another base layer than makes promises it can't keep, these actually do the job and do it well. GET THEM. ... show more
Reviewed in the United States on December 31, 2023 by sbonne

  • Nice Product
Special Size Type: Thermoflux 300 Heavyweight Size: Medium Color: White
Don't get me wrong. These will keep you warm and feel great on. The only thing keeping me from giving them 5 stars is that they're cut a bit larger (looser) than I expected - not as snug as in the photos. I'm 5'-8"/170 pounds. Ordered M but wondering whether S would have been a better fit.
Reviewed in the United States on January 29, 2023 by Sully

  • Best budget thermals on the market.
Special Size Type: Thermoflux 300 Heavyweight Size: Medium Color: Dark Heather Grey
The fit, size, stretch, warmth and moisture wicking are all near perfect. Are there brands like Under Armour that perform a little better? Sure, but I was able to buy a medium AND heavyweight set of Lapasa for less than a single set of more expensive thermals. Bottom line: This company knows their business. ... show more
Reviewed in the United States on January 2, 2024 by John Smith

  • I will be buried in it, it’s so soft
Special Size Type: Thermoflux 300 Heavyweight Size: Medium Color: Camouflage Dark Gray
I’m 5’11 and like 160-165, the medium fits exactly how I hoped it would. Tight enough to be a base and allow extra layers but not restricting so I’ll still be comfortable on my motorcycle. It is so soft it’s like I’m being hugged by a cloud. Edit/update, not only are they comfy but they are effective. Wore them on a ride for the first time, I only had a pair of jeans and a good quality wind proof jacket over top of these, so not much. It was 43 degrees out and I was doing about 85mph on the Highway, which makes it feel more like 30 and it was a bearable ride, which actually says a whole lot about these thermals. Will definitely be getting more ... show more
Reviewed in the United States on November 18, 2023 by Zack Boyd Zack Boyd

  • Fast delivery
These long John’s are silky soft on the inside and comfortably warm. I hope you enjoy them as much as I do.
Reviewed in the United States on December 31, 2023 by Buzz

  • Worth every penny
Special Size Type: Thermoflux 100 Lightweight Size: Large Color: White
This thermal set is very warm yet lightweight. I highly recommend!
Reviewed in the United States on December 23, 2023 by veronicakes

Can't find a product?

Find it on Amazon first, then paste the link below.