Ejis is one of the few sweat-proof brands that covers both ends: undershirts for your underarms and boxer briefs for the groin and bum. That range is why it keeps coming up in my sweat-proof underwear list. Here’s what the brand says, what I could verify, and how to buy without getting stuck with the wrong size.
Quick verdict: a well-rounded brand with three undershirt fabrics, boxer briefs and a built-in silver anti-odor treatment. Its first-purchase guarantee is the strongest buyer protection of the three brands I reviewed. Independent testing is limited, and the pad size numbers online don’t agree with each other.
What Ejis sells
Ejis makes sweat-proof undershirts, boxer briefs, a T-shirt and a women’s scoop neck. All of them use the brand’s X2 ConfidenceCore underarm pad (or the equivalent barrier in the underwear) and an anti-odor treatment. The brand says its pad is one single piece with no seam through the middle, so there is no seam for sweat to leak through.
| At a glance | Ejis |
|---|---|
| Best for | Men who want an undershirt and sweat-proof boxer briefs from one brand |
| Undershirt fabrics | Micro modal with 5% spandex; Ultra Breathable (53% TENCEL lyocell, 42% nylon, 5% spandex); cotton |
| Necklines | V-neck, crewneck, and a women’s scoop neck |
| Underwear | Sweat proof, regular and performance boxer briefs |
| Anti-odor | Silver-based treatment (SILVADUR, per the brand’s blog) |
| Price | About $39 to $45 for most undershirts |
| Care | Turn inside out, gentle detergent, no bleach; don’t sleep in it |
| Guarantee | First Product Guarantee: replacement in a new size or a refund within 45 days of delivery, for first-time buyers |
| Shipping | US-focused; free over $90 in the US; international availability is limited |
The three undershirt fabrics
This is where Ejis is more flexible than most brands. The micro modal version is the softest and smoothest, which suits sensitive skin. The Ultra Breathable version blends TENCEL lyocell with nylon, and the brand describes it as quick-drying, which is the one to pick if you want something lighter. The cotton version is the traditional option. If you’re unsure which to pick, my explanation of wicking vs absorbing fabrics will help.
The pad size claims don’t agree
Ejis says its pad covers more than 140 square inches of underarm area. An Amazon listing and a third-party site give 120 square inches instead. I can’t tell you which is right, so don’t buy on the number. What matters more is that the pad is big enough for where you sweat. Move your arms around in the mirror and check coverage on the sides and back of the arm.
What independent sources say
I did not find an independent, hands-on test of the X2 ConfidenceCore shirt. Most online coverage is from Ejis itself or from affiliate roundups. Customer reviews on retail pages are mostly positive, including from people who say they have been buying them for years, but those aren’t verified tests. Take the “100% sweat proof” language as a promise, backed by a guarantee, not a lab result.
Returns and the First Product Guarantee
Ejis is stricter than most about returns: opened or tried-on undergarments aren’t accepted. The exception is the First Product Guarantee. If it’s your first purchase of a sweat-proof undershirt or boxer briefs, you can ask within 45 days of delivery for a replacement in another size or a refund, without sending it back. It doesn’t cover style or color changes. The brand’s pages show both a 30-day and a 45-day window in different places, so confirm the current terms before you order.
Pros and cons
What works
- Undershirts and boxer briefs from one brand
- Three fabric choices, including a light, quick-drying one
- Seamless one-piece pad design (per the brand)
- Strong first-purchase guarantee
- Silver anti-odor treatment built in
What doesn’t
- Pricier than basic undershirts
- Limited independent testing; pad size claims conflict
- Opened items can’t normally be returned
- International shipping is limited
Who it suits, and who should skip it
Ejis suits men who want the whole system, an undershirt and matching boxer briefs, and who value odor control. If you only want a basic cotton undershirt, Thompson Tee is the simpler pick. If you want a shirt that looks normal on its own, look at Social Citizen. For the underwear side specifically, my top 10 sweat-proof underwear for men and groin and bum sweating guide go deeper.
My take on Ejis
Ejis is a good brand, and it does hide sweat. It is a strong choice if you want undershirts and boxer briefs from one place. If you are a heavy sweater, I would look at Thompson Tee or SUTRAN first, because they hide sweat for longer.
Quick answers about Ejis
What is the X2 ConfidenceCore pad?
It’s Ejis’ name for its underarm sweat barrier: a single-piece waterproof pad with no center seam, designed to absorb sweat and stop it reaching your outer shirt.
Does Ejis make sweat-proof underwear?
Yes. Ejis sells sweat proof, regular and performance boxer briefs alongside its undershirts.
Does Ejis accept returns?
Opened undergarments generally aren’t accepted. First-time buyers of a sweat-proof undershirt or boxer briefs are covered by a guarantee: a replacement size or refund within 45 days of delivery.
Is Ejis the same as other sweat-proof undershirts?
The idea is similar to Thompson Tee and others: a pad under each arm. Differences are in pad construction, fabric choice and extras like silver anti-odor treatment.
Where to buy
Men’s Ultra Breathable V-neck: Ejis on Amazon. You can also see the full range, including women’s styles and boxer briefs, on Ejis’ own site.
This post is based on Ejis’ own product pages, care guide and return policy, and the independent information I could find, plus my own opinion where I say so. Some links in this post are affiliate links: if you buy through them I may earn a small commission at no extra cost to you. That does not change what I write. Prices, products and policies change, so check the brand’s site for current details before you order.
