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Micro Modal Crew Neck Sweat Proof Undershirt

259 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.

  • We ship to the U.S. & Canada. 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 may be delayed due to the pandemic. Visit the COVID-19 Update webpage for up-to-date details.

    Canada Standard International Shipping

    $9.99 for the first unit Plus $3.00 for each additional unit (e.g. two units would be $9.99 + $3.00 = $12.99). The international shipping rate does not include any customs, duties & service fees that may apply upon delivery.

    Most orders arrive in a week, but they can take up to 20 business days depending on customs delays and local postal services. Both of which are outside of our control.

    Canada FedEx International Economy:


    FedEx International Economy shipments arrive in 3-5 business days from date of shipment but can take longer depending on customs delays, which is outside our control.

  • 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 259 Reviews
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Filter Reviews:

    I love your tshirts! But I prefer when they were made of cotton...

    Christian M.
    Canada Canada


    Hi Christian, Thank you for leaving a review! I am so happy to hear that you love your Ejis undershirts. We still make sweat proof undershirts in Cotton and hope to have more sizes in style by the new year. Have a great day, Merrielle Ejis Customer Support


    Excellent quality

    Excellent. You can sweat throughout the day and the pads work as designed. No more sweat stained dress shirts.

    David S.
    Canada Canada


    Hi David, Thank you for leaving a review. I am so happy to hear that your Ejis undershirt is keeping your dress shirt dry all day! Have a great day, Merrielle Ejis Customer Support


    Micro modal undershirt

    Good fit and kept dress shirt DRY!!

    Vanessa D.
    United States United States


    Hi Vanessa, Thank you for leaving a review! I am so happy to hear that your Ejis undershirt fits well and is keeping your outer shirt dry. Have a great day, Merrielle Ejis Customer Support


    Best Undershirts Hands Down

    I’ve been buying these undershirts for years, and I love them! The only issue is sometimes they run out of stock. I suppose everyone else loves them as well.

    EJ H.
    United States United States


    Hi EJ, Thank you for sharing your experience. I am so happy to hear that you think Ejis undershirt is the best! We appreciate you being a valued Ejis customer. Have a great day, Merrielle Ejis Customer Support


    Relief = Confident

    These undershirts are such a relief knowing that I'm not pitting out which provides confidence. I am able to wear any color of shirt knowing that i'm protected.

    Jason B.
    United States United States


    Hi Jason, Thank you for leaving a review. I am so happy to hear that your Ejis undershirts are giving you confidence to wear any color! Have a great day, Merrielle Ejis Customer Support


    Excellent Product

    I bought this undershirt for my son to wear under his work shirt. He loves them. The only complaint I have is the price. I understand they are a good quality undershirt, but they are very expensive.

    Cynthia B.
    United States United States


    Hi Cynthia, Thank you for leaving a five-star review. We're thrilled that your son loves our sweat proof undershirts and can wear them to protect his work shirts. We understand our products are more expensive than conventional undershirts. To help with the cost, we now offer Sezzle on our website store. It breaks down the cost of your purchase into more manageable payments without interest. There is more information about it on the product page. Thank you for being a valued Ejis customer! Best, Julie Ejis Customer Support


    Better than expected

    Seeing them out of the package had me doubting them. Thought I might sweat more due to the thickness under the arm. Nope that did not happen! Great product

    Corwin (.
    United States United States


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


    Find your size!

    I ordered two different sizes as I wasn’t sure how my Autistic teen would take to these shirts. He loves the one which fit him more snuggly. I gifted a friend the larger version & she’s placing an order for her three kids! Fantastic non return pay it forward program. Free advertising. Brilliant business model. HUGE PROBLEM IS NO STOCK. They have very little stock. Why is this? I’m ready to buy boxers and they are all out.

    Theresa H.
    United States United States

    I hate those arm pit cover The one without it are incredible but it is very confusing to buy them on your website I love the black one without those underarm extra cover but we can buy it

    A Ejis Customer
    luc f.
    United States United States


    Hi Luc, Thank you for leaving a review! I apologize that you find our website listings confusing. I will let our website development team know. I am so happy to hear that you love your Ejis undershirt! Have a great day, Merrielle Ejis Customer Support


    Great product

    Life Changer. I would buy it again.

    Brian P.
    United States United States


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