---
title: "Sweat Proof Under Shirt for Man — $28K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/sweat-proof-under-shirt-for-man"
last_updated: "2026-08-06T02:47:37.551Z"
locale: en
meta:
description: "Niche score 36/100 · $28K/yr market · 58K searches/yr · $31.38 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 36/100 · $28K/yr market · 58K searches/yr · $31.38 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Sweat Proof Under Shirt for Man — $28K/yr Amazon US Niche (2026) - Flapen"
---
# **sweat proof under shirt for man**
**Skip it**
A small market ($28K/yr) — this niche doesn't clear our bar today.
Market size 7Growth 33Conversion 19Competition 44Returns 44Price range 95Avg price 95Brand share 13Review moat 21Quality gap 53
**Avg price**
**Incredible****$31.38**
avg listing price — sweet spot $15–$100
**Price range**
**Incredible****$15.44–$42.93**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Competition**
**Okay****59%**
top-5 click share — leaders hold, buyers still browse
**Returns**
**Okay****3.5%**
return rate — above 5% kills the launch gate
**Growth**
**Okay****+6.8%**
90-day search growth — must beat 0% to launch
**Review moat**
**Bad****11,805.04**
avg incumbent reviews — the moat a new listing must climb
**Conversion**
**Bad****1.5%**
search→purchase rate — share of searches ending in a sale
**Brand share**
**Bad****95%**
top-5 brand share — brand-locked demand
**Market size**
**Bad****$28K**
$28K/yr · 58K searches
According to Flapen's Amazon United States niche tracking, sweat proof under shirt for man is a $28K/yr Amazon United States market (58K searches/yr). The top 5 brands hold 95% of demand. Demand peaks in Aug. Verdict: Skip it — 36/100.
Data updated Jul 21, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **sweat proof under shirt for man market data**
- **Units sold / yr**
- **1K–2K**
- avg 0–100/product
- **Revenue / yr**
- **$39K–$47K**
- units × avg price
- **Conversion rate**
- **1.5%**
- **Avg BSR**
- **#169**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **87%**
- **Out of stock**
- **0.3%**
- **Avg brand age**
- **47 months**
- **Avg seller age**
- **151 days**
## **Competition & brand share**
The top 5 products take 59% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**8 **▼falling
**Sellers**
**18**
**Top-5 brand share**
**95%**
Top 20: 100%
**Top-5 click share**
**59%**
Top 20: 96%
**Open market**
**3%**
- THOMPSON TEE62% - Hanes14% - Ejis11% - DEEPVTEE4% - BAMBOO COOL3% - TopDry2% - Open — no brand owns it (2 brands, 3%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +6.8% search growth over the last 90 days.
3K2KSpike '24Prime Day '25Black Friday '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Aug · busiest ÷ quietest = 1.7×
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/sweat-proof-under-shirt-for-man/trend)
## **Top sweat proof under shirt for man search terms**
- **sweatproof undershirts**28K/yr+17.4%0.9% conv. - **sweat proof undershirt for men**15K/yr-23.4%1.6% conv. - **sweatproof undershirt**4K/yr+3.5%1.0% conv. - **sweat proof undershirt**3K/yr+60.9%1.2% conv. - **sweatproof undershirt for men**3K/yr+48.4%1.3% conv. - **thompson tees**4K/yr+33.2%1.2% conv. - **anti sweat undershirt**1K/yr-15.6%1.1% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/sweat-proof-under-shirt-for-man/search-terms)
## **Top sweat proof under shirt for man products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%10%$3K20%$6K30%$8K40%$11K101001K10K100K1.0M Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 23 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Mens Sweatproof Undershirt - Cotton Crew Neck T-Shirt with Underarm Sweat Pads - Original Fit - Aluminum-Free Alternative - White - Medium**THOMPSON TEE**$35.78**4.5★3,694 rev](https://www.amazon.com/dp/B00CIZLPVI) [2**Mens Sweatproof Undershirt - V Neck T-Shirt with Underarm Sweat Pads - Slim Fit - Aluminum-Free Alternative - White - Large**THOMPSON TEE**$41.19**4.4★2,700 rev](https://www.amazon.com/dp/B00OL11MHY) [3**Mens Sweatproof Undershirt - Cotton Crew Neck T-Shirt with Underarm Sweat Pads - Original Fit - Aluminum-Free Alternative - White - Large**THOMPSON TEE**$35.41**4.5★3,694 rev](https://www.amazon.com/dp/B00CIZLR0C) [4**Hanes Mens Sweat Block Undershirt Underarm Sweat Blocking Tee White Crewneck T-Shirt 3-Pack**Hanes**$17.09**4.5★501 rev](https://www.amazon.com/dp/B0DTBWVVW4) [5**Ejis Sweatproof Undershirt for Men | V-Neck Cotton | Classic Fit T Shirt with Sweat Pads | Odor Resistant | Blocks Sweat (Large White)**Ejis**$37.92**4.4★1,638 rev](https://www.amazon.com/dp/B071X12YZ8)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Fruit of the Loom Mens Undershirts Moisture Wicking & Tag Free Short Sleeve Crew T-Shirts Black - 3 Pack Small**Fruit of the Loom**$15.44**160,457 rev1y ago](https://www.amazon.com/dp/B0F8P3VTY4) [**Hanes Mens Sweat Block Undershirt Underarm Sweat Blocking Tee White Crewneck T-Shirt 3-Pack**Hanes**$17.09**501 rev1y ago](https://www.amazon.com/dp/B0DTBWVVW4) [**Hanes Mens Sweat Block Undershirt Underarm Sweat Blocking Tee White V-Neck T-Shirt 3-Pack**Hanes**$16.89**637 rev1y ago](https://www.amazon.com/dp/B0DTBR923L) [**Ejis Mens Sweatproof Undershirt - Ultra Breathable Slim Fit - Deep V Neck - with Sweat Pads - Quick Dry (Medium White) Invisible Under the Shirt**Ejis**$42.93**40 rev2y ago](https://www.amazon.com/dp/B0D7J6YS44) [**BAMBOO COOL Mens Undershirts Pack Soft T Shirts for Men Moisture Wicking Tees Stretchy Breathable Crew Neck Inner Shirt**BAMBOO COOL**$34.62**3,448 rev3y ago](https://www.amazon.com/dp/B0BXFHW91M)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Fruit of the Loom Mens Undershirts Moisture Wicking & Tag Free Short Sleeve Crew T-Shirts Black - 3 Pack Small**Fruit of the Loom**$15.44**4.6★**▲ 64%**](https://www.amazon.com/dp/B0F8P3VTY4) [**Ejis Mens Sweatproof Undershirt - Ultra Breathable Slim Fit - Deep V Neck - with Sweat Pads - Quick Dry (Medium White) Invisible Under the Shirt**Ejis**$42.93**4.2★**▲ 50%**](https://www.amazon.com/dp/B0D7J6YS44) [**Mens Sweatproof Undershirt - Cotton Crew Neck T-Shirt with Underarm Sweat Pads - Original Fit - Aluminum-Free Alternative - Black - X-Large**THOMPSON TEE**$35.81**4.5★**▲ 47%**](https://www.amazon.com/dp/B00G6THSZO) [**Ejis Sweatproof Undershirt for Men | V-Neck Cotton | Classic Fit T Shirt with Sweat Pads | Odor Resistant | Blocks Sweat (X-Large Black)**Ejis**$37.67**4.4★**▲ 41%**](https://www.amazon.com/dp/B072MW92DK) [**TopDry Womens Undershirts - Sweatproof Shirts Women with Underarm Sweat Pads - White**TopDry**$29.56**4.2★**▲ 36%**](https://www.amazon.com/dp/B0B2DL7Q59)
**~~View all trending →~~**
## **What buyers say about sweat proof under shirt for man**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**16%
*“Amazing fit”*
**Comfort-Overall**11%
*“They are very comfortable”*
**Quality-Overall**10%
*“Great quality and arrived on time,”*
**Material Quality**9%
*“Good material”*
**Advertised Vs Actual Product**7%
*“As advertise”*
**Value For Money**7%
*“Great value”*
**Soft Feel**7%
*“SUPER SOFT”*
**Sweat Resistance**4%
*“A great option if you deal with sweating”*
**Moist/Dry**3%
*“These shirts are moisture-wickimg”*
**Shrinkage Resistance**2%
*“Very soft and it dont shrink when wash my husband love these shirts for work”*
### **What buyers complain about **
**Size-Overall**19%
*“to big”*
**Thickness**12%
*“Thin”*
**Material Quality**7%
*“Cheap Material”*
**Sweat Resistance**6%
*“they DO let sweat go through”*
**Color**5%
*“the dye from them bleeds out”*
**Quality-Overall**4%
*“Very poor quality”*
**Gap/Hole**4%
*“also a hole came in the front side after 1st wash”*
**Smell**3%
*“Stink funk chemical smell”*
**Durability**3%
*“Did not hold up very long before needing to be replaced”*
**Stitch/Finish/Polish**3%
*“Stitching is minimal”*
### **Top return reasons **
**Size-Overall**46%
**Material Quality**9%
**Thin**7%
**Length**5%
**Neck Fit**4%
**Chest Fit**4%
**Arm Fit**3%
**Advertised Vs Actual Product**3%
**Quality-Overall**2%
**Transparency**2%
## **Common questions**
- **Is sweat proof under shirt for man profitable to sell on Amazon United States?**
- The niche generates $28K/yr across 23 tracked products. 90-day search growth is +6.8%. Flapen's verdict: Skip it (36/100).
- **How competitive is the sweat proof under shirt for man niche?**
- 8 brands and 18 sellers compete. The top 5 products take 59% of clicks and top 5 brands hold 95% of demand.
- **What do buyers complain about in sweat proof under shirt for man?**
- Top complaints mined from reviews: Size-Overall, Thickness, Material Quality. The return rate is 3.5%.
- **When does demand for sweat proof under shirt for man peak?**
- Demand peaks in Aug; the busiest month runs 1.7× the quietest.
- **What does it cost to enter the sweat proof under shirt for man niche?**
- Listings span $15.44–$42.93; the average listing price is $31.38 (sweet spot $15–$100). The average incumbent carries 11,805 reviews — the moat a new listing must climb.
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