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Micro Modal Crew Neck Sweat Proof Undershirt

274 reviews
Size Guide

  • Tired of undershirts that can’t keep up? Ejis undershirts don’t show sweat, and keep you cool in the heat – whether that’s a hot day or the pressure of suiting up to close a big deal.

    We founded Ejis based on the belief we could make you feel more confident by solving two of your most embarrassing problems: sweat marks and odor. We've woven intelligent design, world class functionality, and unrivaled comfort into our undershirts to give you what we call "Wearable Confidence."

    Our crew neck sweat proof undershirts feature a comfortable micro modal fabric that absorbs sweat and keeps dress shirts dry. They’re comfortable, they fit well, and they do their job so you can confidently do yours. The crew neckline is perfect under a suit and tie. Now that we think about it, this undershirt is as successful as you are – you’ll make a powerful partnership.

    In our Ejis crew neck micro modal sweat proof undershirt, luxuriously soft micro modal is permanently fused with real silver to fight odor in a flattering slim fit cut. An impenetrable sweat proof barrier under each arm stops sweat marks. Added length and stretch keeps your undershirt tucked in.

    All Ejis sweat proof undershirts are engineered from the ground up specifically for the exceptional man who wants an unfailing, discreet solution to sweat marks and bad odor. Join the thousands of men who are now able to wear what they want because of their Ejis undershirts.

    Need a different style? Check out our V-Neck and Deep-V options.

  • LARGE ONE-PIECE WATERPROOF LAYER – Stops sweat in its tracks – that is, sweat won’t transfer to your shirt. Think of it as your never-fail backup to antiperspirant deodorant, durable enough to be washed over and over and chemical free.

    BACTERIA-FIGHTING SILVER TO COMBAT ODOR – Silver is permanently bound to the fibers of each sweat proof undershirt, which keeps you fresher longer. It also helps to regulate your body temperature by pulling heat away from the body when you're hot.

    SUPER PREMIUM MICRO MODAL FABRIC – Twice as soft and 50% more water-absorbent than cotton. With 5% Spandex to add stretch, it will possibly be the most comfortable men's undershirt you've ever worn.

    ADDED LENGTH TO KEEP YOU TUCKED IN – The slim fit design keeps the protective area snugly up against your armpit, where it belongs. Stop settling for slopping, disheveled t-shirts under your dress shirts.

    WHAT THIS UNDERSHIRT WON'T DO is make your sweat disappear. Unfortunately, we can’t stop sweat from happening. It may feel damp under your arms but sweat stains won't show on your shirt when you wear this powerful no sweat undershirt.

  • Visit the COVID-19 Update webpage for up-to-date details about international shipping.

    U.S. Shipping

    Standard Shipping FREE (arrives in 3-10 business days from day of shipment)
    Expedited $9.99 (arrives in 2-3 business days from day of shipment)
    Priority $29.00 (arrives in 1-2 business days from day of shipment)

    Orders are processed at our Utah, USA based warehouse within 24 hours of being placed.

    Priority and expedited shipping are not available for P.O. Box addresses. Buyers with orders shipped to Alaska and Hawaii are charged domestic shipping rates.

    International Shipping

    International shipping may be delayed due to the pandemic. Visit the COVID-19 Update webpage for up-to-date details.

    International shipping costs are based on live-rates.

    Ejis has partnered with Passport Shipping to handle all international shipments. Thanks to Passport you can now pay taxes and customs/duty fees at checkout so your order won't get stuck in customs and you won't have any surprise fees upon delivery.

    Once your parcel has left the United States, please expect it to take roughly 10-14 business days to arrive in your country. This timeline should be reflected in the estimated delivery date on your tracking page. Visit our FAQs for more information about International Shipping.

  • First Product Guarantee

    Buy one undershirt and one pair of boxers and try them out risk-free! If you don’t love them, we’ll send you a different size or issue a refund. No return required. Visit the FAQs for details.

    Satisfaction Guarantee 45-day Return Policy

    If it’s not covered by our First Product Guarantee, we’ll still issue a refund or process an exchange for orders returned to us within 45 days of purchase. We don’t resell items that have been tried on (because no one wants to buy used underwear) so all returned items must be unopened, unworn, unwashed, containing the tags and are folded neatly inside the original, packaging that is not torn, ripped or cut open. Visit the FAQs for details.

It will actually work for you. Or your money back.

Frequently Asked Questions

What does sweat proof mean?

Our sweat proof undershirts and boxer briefs are engineered to prevent sweat stains. Can we stop you from sweating? Heck no! But we can keep sweat marks from appearing on the armpit of your dress shirts and the seat of your pants.

What if it doesn’t work?

You get a full 45 days from purchase to put your first undershirt to the test to make sure it really works for you just like it does for tens of thousands of other men. If you feel it’s not right for you just let us know and we’ll give you a refund. Valid for single units only. Multi-packs are eligible for our Satisfaction Guarantee 45-day Return Policy. See the FAQ more details.

How does a silver-infused undershirt fight odor?

Bacteria cause odor, and silver has anti-odor properties. We infuse silver particles into our fabrics to help fight that odor-causing bacteria. Our odor-resistant undershirts are scientifically engineered to keep your shirts smelling fresh. Each of our anti-odor undershirts includes this powerful technology, as do our odor-fighting socks and sweat-proof underwear.

Where do these shirts get their sweat-fighting superpowers?

It might look like just an undershirt, but there’s a lot of technology behind our design. We begin with a soft, moisture-wicking micro modal pad fused with silver to fight odor-causing bacteria. We then add a durable waterproof layer to help defend your dress shirt from sweat, and finish with a super comfortable outer layer. The result is an undershirt with a sweat-proof barrier that keeps sweat from showing through to your dress shirt, and stops sweat marks or deodorant marks.

Customer Reviews
4.9 Based on 274 Reviews
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    Very comfortable item

    I've really enjoyed wearing these socks over the summer – they inspire confidence that I won't be uncomfortable in the warm weather.

    Allan R.
    United Kingdom

    Texas humidity success

    Worked perfectly, without overheating! Husband was very excited to finally get through an important marketing meeting sweat stain free! Placing a second order now.

    Crystal D.
    United States United States

    These Shirts Are Great

    Great product. I would recommend this product to anyone who doesn’t want visible sweat marks when wearing a shirt.

    Michael B.
    United States United States

    Fantastic Fit

    Fantastic fit, better than I actually expected the item to be

    justin g.
    Canada Canada


    Hi Justin, Thank you for leaving a review. I am so happy to hear that your Ejis undershirt fits better than you expected! Have a great day, Merrielle Ejis Customer Support


    My son loves these!!

    My son wears them under his sheriff uniform. Used to have visible perspiration rings before, now absolutely nothing! They are fantastic

    Edward G.
    United States United States


    Hi Edward, Thank you for leaving a review. I am so happy your son is loving his Ejis undershirts! Have a great day, Merrielle Ejis Customer Support


    Great Product!!

    Excellent experience, I have been using your undershirts for at least four maybe five years now and continue to purchase them. I wear them with work clothes and on my off times and they have always worked wonderfully. I often get asked how I’m not sweating so much, when actually I am. Then I explain and tell them how to get their own products from you.

    Stephen C.
    United States United States


    Hi Stephen, Thank you for leaving a review. I am so happy you have had an excellent experience with your Ejis undershirts! We appreciate the recommendations! Have a great day, Merrielle Ejis Customer Support


    Best tee shirt out there

    Ordering easy. Shipping quick. The fabric, fit and comfort for exceeds expectations. Only drawback is my husband works five days a week as a deputy and my son as patrol. Wish the tees were not as pricey.

    Robin K.
    United States United States

    Crew Neck Sweatproof Shirt

    I have worn the shirt once so far and was pleasantly surprised that it 100% worked. I'm very impressed and will definitely purchase more in the future.

    Seth S.
    United States United States


    Hi Seth, Thank you for leaving a review. I am so happy to hear that you are impressed with your Ejis undershirt! Have a great day, Merrielle Ejis Customer Support



    Awesomeness awesomeness

    Brian B.
    United States United States


    Hi Brian, Thank you for leaving a review. I am so happy to hear that you think your Ejis undershirt is awesome! Have a great day, Merrielle Ejis Customer Support


    It worked

    Outstanding feel far more better

    Obaid B.
    United States United States


    Hi Obaid, Thank you for leaving a review. I am so happy to hear that your Ejis undershirt is outstanding! Have a great day, Merrielle Ejis Customer Support