Thompson Tee vs Ejis: Best Sweat-Proof Undershirt

Thompson Tee vs Ejis: Best Sweat-Proof Undershirt

Thompson Tee and Ejis are the two leading sweat-proof undershirt brands, and they take notably different approaches to the same problem. Thompson Tee uses a waterproof barrier that physically blocks sweat. Ejis uses an absorption system with antimicrobial silver fibres.

This comparison covers every angle to help you pick the right one for your sweating level, comfort preferences, and budget.

Disclosure: This site earns affiliate commissions from qualifying purchases. This does not affect our editorial independence or product rankings.

Quick Comparison

Sweat Protection: Thompson Tee Wins

This is the most important comparison, and Thompson Tee has a clear advantage.

Thompson Tee: Hydro-Shield (Waterproof Barrier)

The Hydro-Shield is a multi-layer waterproof panel sewn into each underarm area. It does not just absorb sweat — it physically blocks moisture from passing through to the outer fabric. There is no saturation point. No matter how much you sweat, the outer surface of the shirt stays dry.

Owners consistently report that sweat does not show through a Thompson Tee. Not on high-stress days, not in summer heat, not during physical activity. The barrier works absolutely.

Ejis: X2 ConfidenceCore (Absorption System)

The X2 ConfidenceCore uses a multi-layer absorbent panel that wicks sweat away from your skin and holds it in the underarm area, preventing transfer to outer clothing. This works well under normal conditions and moderate sweating.

The limitation: absorption has a ceiling. During heavy sweating (high-stress presentations, hot outdoor events, intense physical activity), the panels can reach saturation. When they do, moisture begins seeping through — the exact problem you are trying to prevent.

Owners report Ejis occasionally saturating on the very heaviest days, always during the heaviest sweating episodes. For someone with severe hyperhidrosis, this could happen more frequently.

The Bottom Line

If you need the most reliable barrier against bleedthrough, Thompson Tee is the safer choice. If your sweating is mild to moderate and bleedthrough on occasional heavy days is acceptable, Ejis works well.

Winner: Thompson Tee (clearly)

Fabric Comfort: Ejis Wins

Thompson Tee Fabric

Thompson Tee offers two options:

• Premium cotton blend: Classic undershirt feel. Soft but standard.
• Bamboo rayon blend: Noticeably softer than cotton. More breathable and moisture-wicking. This is the recommended option.

The bamboo version is comfortable — easily above average for an undershirt. Most people would be perfectly happy wearing it daily.

Ejis Fabric

Ejis uses Micro Modal, a semi-synthetic fibre derived from beech tree pulp. It is one of the softest commercially available fabrics, and the difference is noticeable the moment you put the shirt on.

Micro Modal advantages:

• Exceptionally soft — softer than bamboo rayon, significantly softer than cotton
• Lightweight — thinner and less bulky under outer clothing
• Excellent drape — conforms to the body without clinging
• Breathable — superior airflow compared to cotton blends
• Shape retention — maintains its form through wash cycles

If fabric feel matters to you, Ejis is the better-feeling garment. It is not a marginal difference — the Micro Modal is genuinely noticeably softer.

Winner: Ejis (clearly)

Odour Control: Ejis Wins

Thompson Tee

Thompson Tee controls odour primarily through sweat containment — if the sweat is trapped in the Hydro-Shield barrier, it has less opportunity to interact with bacteria on the outer fabric surface. This is effective but indirect.

Ejis

Ejis embeds silver fibres directly into the fabric. Silver ions disrupt bacterial cell membranes, actively killing the microorganisms that cause body odour. This provides antimicrobial protection across the entire garment, not just the sweat panels.

The result: Ejis shirts smell noticeably fresher at the end of a long day compared to Thompson Tee. Even when sweat does saturate the panels (on heavy days), the silver fibres keep odour controlled.

For people who deal with both sweating and odour concerns, Ejis' silver technology is a meaningful differentiator.

Winner: Ejis

Fit and Style Options: Thompson Tee Wins

Thompson Tee

• Necklines: Crew, V-neck, deep V-neck
• Fit: True to size, available in slim and regular fits
• Women's styles: Scoop neck, camisole, and other feminine cuts with Hydro-Shield
• Colours: White, black, gray, and additional options
• Sizes: XS-3XL

The deep V-neck is particularly valuable — it is invisible under open-collar dress shirts, which is essential for business attire. Thompson Tee's women's line is also more developed, with styles designed specifically for feminine cuts.

Ejis

• Necklines: Crew, V-neck
• Fit: True to size
• Women's styles: Limited
• Colours: More limited selection
• Sizes: S-3XL
• Bonus: Boxer brief option ($28.99 (about £22)) — below-waist protection that Thompson Tee does not offer

Ejis' neckline options are adequate but less versatile. The lack of a deep V-neck means the shirt may show at the collar of open-collar dress shirts.

Winner: Thompson Tee (more neckline options, better women's line, deep V-neck)

Durability: Tie

Both brands hold up well with proper care:

Thompson Tee After 50+ Washes

• Hydro-Shield barrier: Fully functional
• Fabric: Slight softness reduction; shape maintained
• Colour: Slight dulling on white; gray holds well
• Stitching: Intact, no pilling

Ejis After 50+ Washes

• X2 panels: Still absorbing effectively
• Fabric: Micro Modal maintains softness well
• Silver treatment: Odour control consistent
• Stitching: Intact, no pilling

Both brands recommend cold wash, tumble dry low, no fabric softener, no bleach. Following these guidelines, expect 6-12 months of effective use with daily rotation.

Winner: Tie

Below-the-Waist Protection: Ejis Wins (by Default)

Thompson Tee does not make underwear. Ejis does.

The Ejis Boxer Brief ($28.99 (about £22)) applies the same X2 ConfidenceCore and silver-infused Micro Modal to underwear, providing sweat and odour protection for the groin and upper thigh area. If you deal with below-waist sweating, Ejis is the only option in this comparison.

Winner: Ejis (Thompson Tee does not compete here)

Pricing: Nearly Identical

The $1 (about £0.74) difference between the undershirts is negligible. Both represent a premium over regular undershirts, but both are reasonable investments for sweat management.

For a 5-shirt weekly rotation:

• Thompson Tee: ~$170 (about £126)
• Ejis: ~$165 (about £123)

Winner: Tie (the difference is insignificant)

Decision Framework

Choose Thompson Tee If:

• Your sweating is moderate to severe — the waterproof barrier guarantees zero bleedthrough
• You cannot afford any visible sweat marks — presentations, client meetings, dates
• You wear dress shirts — the deep V-neck is invisible under open collars
• You are a woman — Thompson Tee has more women's styles with the same sweat-proof technology
• Reliability is your #1 priority — Hydro-Shield never saturates

Choose Ejis If:

• Your sweating is mild to moderate — X2 absorption handles it comfortably
• Fabric softness is a top priority — Micro Modal is the most comfortable option
• Odour control matters as much as sweat control — silver fibres provide active antimicrobial protection
• You need below-waist protection — the boxer brief fills a unique gap
• You prefer the lightest-weight undershirt — Micro Modal adds less bulk than bamboo or cotton

The Best of Both Worlds

Some people choose differently for different situations:

• High-stakes days (presentations, interviews, dates): Thompson Tee — the most reliable protection
• Regular daily wear (office, casual): Ejis — maximum comfort
• Below the waist: Ejis Boxer Brief — the only option

This mixed approach costs more but gives you the ideal shirt for every situation.

Our Verdict

For most people with hyperhidrosis, the Thompson Tee is the better choice. The waterproof Hydro-Shield barrier provides a level of reliability that absorption-based systems cannot match, and when you are buying a sweat-proof undershirt, reliability is the whole point.

Ejis is the better choice if your sweating is on the milder side and you value the softest possible fabric and best odour control. The boxer brief is also a standout product with no direct competitor.

If you can only buy one, buy the Thompson Tee. If you can buy both, use them situationally — Thompson Tee for high-stakes days, Ejis for everyday comfort.

Buy Thompson Tee → | Buy Ejis →

FAQ

Can I wear both an antiperspirant and a sweat-proof undershirt?

Absolutely — this is the recommended approach. A clinical antiperspirant reduces sweat production, and the sweat-proof undershirt catches whatever gets through. Together, they provide the highest level of confidence.

Which is better for gym or athletic use?

Neither is designed as athletic wear, but Ejis' Micro Modal breathes better during activity. For dedicated workouts, moisture-wicking athletic shirts are a better choice. Save sweat-proof undershirts for work, social situations, and daily wear.

How do I know if I need a waterproof barrier or just absorption?

If your underarm sweating ever visibly stains your outer shirt during normal daily activity (not exercise), choose Thompson Tee's waterproof barrier. If your sweating is noticeable but rarely leaves visible marks, Ejis' absorption system is likely sufficient.

Do either brand offer a satisfaction guarantee?

Both brands typically offer return/exchange policies. Check their current return policies before purchasing, as terms may vary.

Sources

• Thompson Tee — Hydro-Shield technology specifications
• Ejis — X2 ConfidenceCore and silver fibre documentation
• International Hyperhidrosis Society — Lifestyle management strategies
• Textile Research Journal — Comparative properties of bamboo rayon and Micro Modal fabrics

Related reading

• Full Thompson Tee review
• Full Ejis review
• All sweat-proof undershirts compared
• Underarm sweat pads — a cheaper alternative to a shirt rotation