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Cotton V-Neck Sweat Proof Undershirt

144 reviews
Size Guide

  • A simple v-neck undershirt should be a staple of every man’s wardrobe. If you wear a button-up shirt without a tie, you need a v-neck to keep the undershirt out of view. And unless you enjoy sweat stains on your dress shirts, a sweat proof v-neck is an absolute essential.

    We’re like most guys – we hate sweat, and we hate sweat stains. Ejis v-neck sweat proof cotton shirts are scientifically engineered to resist sweat stains.

    Our white sweat proof shirt works well under most dress shirt. If you wear a lot of white dress shirts, consider our sweat proof grey v-neck; it may seem counter-intuitive, but a grey undershirt is less visible under a white button-up. And don’t forget our black sweat proof v-neck to wear with dark-colored dress shirts or as a casual weekend shirt.

    How is the cotton v-neck undershirt different from the micro modal undershirt?

    To keep you looking dry we used micro modal in the underarm pad to deliver the same sweat absorbing and blocking performance as our full micro modal sweat blocking undershirts and paired it with lightweight, premium 100% combed cotton in the body of the shirt.

  • LARGE ONE-PIECE WATERPROOF LAYER stops sweat from transferring 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.

    SILVER COMBATS ODOR CAUSING BACTERIA. Silver is permanently bound to the fibers of our anti-sweat undershirts, which keeps you fresher longer. It also helps to regulate your body temperature by pulling heat away from the body when you're hot and keeping you warmer when you're cold.

    SUPER PREMIUM MICRO MODAL FABRIC IN THE PAD is 2x softer and 50% more water-absorbent than cotton alone, which means our v-neck cotton undershirt has the exact same sweat blocking performance as our micro modal undershirts.

    STAYS TUCKED IN with added length. 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 sweat proof v-neck shirt.

  • 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
4.8 Based on 144 Reviews
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    After some original shipping issues, the company was kind enough to send replacements and allow me to keep the old improper shipment. Although I did not end up exactly with what I had ordered and it took several rounds of communication, I am impressed and now a lifetime loyal customer for their honorable efforts to make things right.

    Al K.
    United States

    Product was quite good

    Just used the other night. Son is a member of a RifleSquad and sweats profusely. No underarm sweat when performing this time but still sweat marks down his back. You need to put this material down the back of this undershirt also otherwise a good product. Need to order another in a larger size because they seem to run small. Thank you.

    Michele G.
    United States United States

    My 8th purchase

    I’ve 6 crew neck t-shirts (3 cotton and 3 modal) and had one v-neck. This purchase was a second v-neck. I LOVEA THESE SHIRTS!

    A Ejis Customer
    Michael H.
    United States United States

    Comfortable and effective

    I wore one of these to teach on a hot, humid day in New York City. They work!

    A Ejis Customer
    David E.
    United States United States

    V neck shirts

    Definitely worth having. Wore them underneath playing golf. No more sweat stains even when it’s scorching hot.

    George C.
    United States United States


    Hi George, Thank you for leaving a review! I am so happy to hear that your Ejis undershirt is keeping you dry even in the scorching heat on the golf course! Have a great day, Merrielle Ejis Customer Support


    Thank you Ejis!

    Great experience great customer service!

    Mitchell R.
    United States United States


    Hi Mitchell, Thank you for your review. I am so happy to hear that you have had a great experience with Ejis! Have a great day, Merrielle Ejis Customer Support


    Finally found you!

    Great buy! It keeps my shirts dry, no longer feeling uncomfortable and prolongs the life of my shirts.

    Nesanel M.
    United States United States


    Hi Nesanel, Thank you for your review. I am so happy to hear that your Ejis undershirts are keeping you comfortable and dry! Have a great day, Merrielle Ejis Customer Support


    Confidence rebuilder

    These shirts are phenomenal. I normally sweat through the underarms of my shirt in no time, but with these not even a trace of sweat all day long.

    Jason M.
    United States United States


    Hi Jason, Thank you for leaving a review! I am so happy to hear that your Ejis undershirts are keeping you dry all day long! Have a great day, Merrielle Ejis Customer Support


    Under shirt.

    Good. But the size I ordered (2x) runs a little small for me. I will order 3x next time.

    Thomas R.
    United States United States


    Hi Thomas, Thank you for sharing your feedback. I am so glad you are happy with your Ejis undershirt. I apologize the fit wasn't 100% perfect on the first try. Please feel free to email us at support@ejisinc.com if there is anything we can help with. Have a great day, Merrielle Ejis Customer Support


    Life Changing

    Truly a life changing product. My anxiety around sweating has gone down drastically, I can wear clothes I never would have worn before, and my confidence is boosted. I have been wearing the cotton v-neck shirts for a couple years and recommend buying a size smaller than usual because the extra layers around the armpit add bulk that isn’t as noticeable if you choose a snug fit. I want to buy more shirts with the added length to stay tucked. Wear a “black and white” anti-stain antiperspirant as with any white shirt, they will yellow over time and as of yet, I haven’t found a way to get rid of the stain. Perhaps because the interior layer is micro modal? I’m not sure. When will the L cotton V be back in stock???



    Hi Will, Thank you for sharing your experience. I am so happy to hear that your Ejis undershirts have been life changing. For the stains, I recommend checking out our Care instructions on the FAQ page: https://www.ejisinc.com/pages/faq-new . We hope to have our L Cotton V-Neck Undershirt back in stock by the new year. I hope this information is helpful! Have a great day, Merrielle Ejis Customer Support