Try the Best Long Johns

  ★★★★★ Quality | Free US Returns and Exchanges

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These long johns surprised us.

We prototype lots of different pieces at Mr. Davis, but most of it never makes the cut. On a whim, we tried making a longer – to the ankles really – version of our classic bamboo underwear, and we knew the first time we tried it that we had a winner.

These long johns are just unbelievably comfortable. The key is that you wear them instead of your normal underwear whenever it’s going to be cold. Growing up, we only wore long johns when we were playing in the snow, skiing, hunting, or some other outdoor pursuit. The beauty of these is that they can be effectively worn as winter underwear. If the temp is less than 40 F, you’ll be more comfortable.

Stock up and Save More the More You BuyMr Davis Discount Pricing

Learn more about our bulk pricing here.

  • Buttery soft 96% Bamboo viscose / 4% Spandex.
  • Supple and stretchy to move with you.
  • Helps regulate body temperature via built in mesh.
  • Thin enough to wear anything from jeans to dress pants.

Anatomical Pouch

They fit just like our Standard Cut boxer briefs, so you get no-compromise support and fit with a (much) longer cut. 

Temperature Regulation

Inner-leg vents provide cool air flow where you need it most even as the bamboo fabric helps to keep you comfortable.

Premium Materials

Made from ultra premium materials throughout, we still charge far less than our competitors because our business model is designed around lower prices. 

The Secret to Cool Weather Comfort:

Wear Long Johns Every Day

Our premium fabric combination keeps you warm and comfortable when the temperature drops. When you wear our long johns, you'll work out more. You'll walk to lunch more. You'll be more comfortable lounging around the house. It's a better way to enjoy the winter.

Instructions for Use

You probably don't realize how cold legs make colder weather uncomfortable.

Follow these simple steps and you'll actually look forward to Winter weather.


Check the Weather.

If it's lower than 40 degrees Fahrenheit...

Wear these instead of normal underwear.

You can put on your jeans or trousers as usual.

Experience Thermal Bliss.

You'll be so much more comfortable. You can walk outside. You can wear them to the gym. You'll just wonder how you got through the winter before.
Save 20% when you buy five. Just $23 / pair on 10+

Better pricing is part of our philosophy.

If you're going to wear long johns frequently like we suggest, they can't be prohibitively expensive. We've built our business around lower prices than our competitors so that customers can come back when they need more. Other retailers have to charge more when they spend a fortune on branding, have sexy offices in big cities, and have investors who need to get paid back. We would rather not have outside investment, be in a boring Midwest office park, and rely on the word of mouth of our customers so that we can save you 50% and still make the most comfortable long johns you've ever worn.

Size Chart

If you want more room or a looser fit, buy a size larger than you normally buy. If you don’t love your first pair, you get to keep it on us. We also offer free returns and exchanges to help you dial in the right fit.

Received mine a week ago, I absolutely LOVE them, they are incredible. By far the best underwear I've ever owned.

Gary M.Grey Bamboo Trunks Cut, Mid Cut

They look sexy and feel amazing. Hopefully they hold up well. I just opted for the 3 pack but I want more, I never want to wear another brand again.

Gary M.Grey Bamboo Trunks Cut, Mid Cut

To anyone hesitating on getting either the undershirts or the new underwear... STOP RIGHT NOW!! This is the best product you can find, plus the price is more than reasonable!

Jean-Sebastien D.Grey Bamboo Mid Cut, Trunks Cut

All fits are amazing. Now I know where to get underwear for the rest of my life.

Reed C.Grey Bamboo Trunks, Mid and Standard Cut

MUCH more comfortable than my 2xist. I need extra support in the form of anatomical pouch...this pouch provides great support without pinching. I'm very excited with this pair and plan on replacing all of my 2xist with Mr. Davis.

Robert B.Grey Bamboo Mid Cut

Got these for my boyfriend. Says they're the best underwear he's ever worn/owned. Thanks again! He's never been a happy customer in the underwear department.

NadiyahGrey Bamboo Standard Cut

LOVE THEM! Got them in the mail on Monday and wore them at work all day yesterday. I do landscaping so I sweat all day long.

Macsen V.Grey, Navy Sport Standard Cut

Got mine on monday, and just like my Mr. Davis undershirts, they are the most comfortable piece of clothing I have ever worn !! Wow, I will be ordering more for sure!!

Jean-Sebastien D.Grey Bamboo Mid Cut, Trunks Cut

wow. just like the shirts. Your undies are great.

Zachary J.Navy Sport, Bamboo Trunks Cut

These underwear are absolutely great. I have several other pairs of premium underwear from other manufacturers and these are either on par or surpass at a great price point. Can't wait to purchase more from Mr Davis. Great work guys!!!

Paul M.Navy Sport Trunks Cut, Navy Bamboo Mid Cut

Thanks for the great customer service. Your products are much better than Mack Weldon.

Aaron B.Navy Bamboo Trunks Cut

Most undies get uncomfortable as the day goes on. I never even thought about these until I got home and took em off to shower.

Macsen V.Grey, Navy Sport Standard Cut

Buy it for Life

Great long underwear lasts. Find any defect in your Mr. Davis, just email us and we'll replace it.

Direct to You Pricing

We sell direct to you to offer lower prices. Brands with equivalent finishes cost 1.5-2x more.

Free Returns

100 Day Free returns on any unworn merchandise. We think you'll love them but we're here just in case you don't.

The Best Fabric You've Never Felt

  • Stretch Bamboo Viscose is 3-4x softer than cotton and much nicer than Modal, which some of our competitors offer (at higher prices we might add). We think it’s the perfect every-day fabric for underwear and our customers agree.
  • Our 110 gsm Polyamide Venting fabric is so air permeable you can actually feel little puffs of air on your nether regions. The air flow helps minimize moisture accumulation.
  • Premium band elastics won’t bind or fold and last for years of heavy washing.
  • All in all, you’ll forget you’re wearing our drawers. You’ll just be more comfortable.

Try Our Long Johns Before They're Gone

Our stock is limited on these most excellent long johns, and it’s not even that cold yet. Get yours before they’re gone.

Frequently Asked Questions

If we haven’t answered your questions here, hit our chat icon or email us at

What's your return policy?

We offer free returns and exchanges for unused, unworn and unwashed merchandise within 100 days of your order (US customers only). Here’s the process:

  1. Before you return your item, you must contact us at to obtain approval for the return. If you send us a shirt without an RA#, we will not be able to process your return.
  2. Upon approving your return, we’ll send you a prepaid shipping label including the RA#.
  3. You must ship your return to us within 5 days of receiving your label or we may not be able to process your return.
  4. Once we receive your item, we’ll process your return and refund your card for your purchase price.

Does Mr. Davis offer free exchanges?

If you have issues with sizing or selection we provide FREE shipping both ways on exchanges (US only) of your Mr. Davis to get you in the right product. We use the same process we do for returns. We cannot exchange international orders at this time.

What is the fabric composition of the long johns?

Our underwear body is composed of 96% bamboo viscose and 4% spandex, while the venting between legs is 110gsm Polyamide.

Are Mr. Davis Long Johns Built to Last?

Absolutely. We have a motto around here: Buy it for Life. We’re tired of companies making stuff that you have to throw away after a season or two. Our long johns are made from great materials and will hold up very well to every day use. If you follow our care instructions our long johns can last for years. If you ever experience any defect in workmanship outside of normal wear and tear, email us a picture and we’ll replace them.

How do Mr. Davis Underwear fit so well?

Because we obsessed over the details to get the fit just right. Our underwear are designed to be a little snug but delightfully comfortable, so you get the support you need without pinching or riding up.

Our Magical Pouch design gently lifts your package to prevent skin on skin contact, chafing and the need to constantly adjust. Once you try our underwear you’ll never want to go back to normal underwear.

How should I wash my Mr. Davis Underwear?

Heat is generally the enemy of fabrics and Mr. Davis is no different. We advise you wash and dry on cool if possible. If you don’t, your products will still last, but may fade or shrink a bit.

Do you ship worldwide?

We ship to more or less the whole world. Our full country list is on our cart page. Just select the drop down and hopefully we’ll be shipping you something soon!

What payment methods do you accept?

We accept Visa, MasterCard, Discover and American Express. Email us at if you need to make special payment arrangements.

About Mr. Davis

We make the stuff you wear every day. And we make it comfortable.

    • Reward customer loyalty: The more you buy the more you save. We keep prices low all the time so you never feel like you missed a deal.

    • Work with the best factories: We choose quality and craftsmanship over lower production prices.

    • Treat our team well: We offer flexible scheduling, pay our warehouse team are at least $17 / hour, and provide a 4% 401(k) match for all employees, even part-timers.

    • Make things right: We try to limit mistakes, but when something goes wrong, we try to make it right.

We Take Care of Customers

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Connect with Us

Mr. Davis Clothing
6347 W 110th St
Overland Park, KS 66211
833-291-2907 (toll free)