---
title: "Thermal Undershirt for Women — $74K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/thermal-undershirt-for-women"
last_updated: "2026-08-09T20:53:11.795Z"
locale: en
meta:
description: "Niche score 36/100 · $74K/yr market · 640K searches/yr · $19.25 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 36/100 · $74K/yr market · 640K searches/yr · $19.25 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Thermal Undershirt for Women — $74K/yr Amazon US Niche (2026) - Flapen"
---
# **thermal undershirt for women**
**Skip it**
Soft demand (-74.8% this quarter) — this niche doesn't clear our bar today.
Market size 18Growth 0Conversion 8Competition 75Returns 12Price range 75Avg price 86Brand share 73Review moat 38Quality gap 27
**Avg price**
**Great****$19.25**
avg listing price — sweet spot $15–$100
**Competition**
**Great****40%**
top-5 click share — an open shelf
**Price range**
**Great****$8.44–$34.25**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Good****61%**
top-5 brand share — brands hold most of the demand
**Review moat**
**Okay****2,705.76**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Okay****4.6★**
avg incumbent rating — lower means beatable quality
**Market size**
**Bad****$74K**
$74K/yr · 640K searches
**Returns**
**Bad****8.6%**
return rate — above 5% kills the launch gate
**Conversion**
**Bad****0.6%**
search→purchase rate — share of searches ending in a sale
**Growth**
**Bad****-74.8%**
90-day search growth — must beat 0% to launch
**Signals**[** High Returns**](https://flapen.com/research/niches?market=us&signal=high_returns "Return rate > 5%")
According to Flapen's Amazon United States niche tracking, thermal undershirt for women is a $74K/yr Amazon United States market (640K searches/yr). The top 5 brands hold 61% of demand. Verdict: Skip it — 36/100.
Data updated Jul 14, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **thermal undershirt for women market data**
- **Units sold / yr**
- **6K–8K**
- avg 0–100/product
- **Revenue / yr**
- **$116K–$154K**
- units × avg price
- **Conversion rate**
- **0.6%**
- **Avg BSR**
- **#662**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **95%**
- **Out of stock**
- **2.6%**
- **Avg brand age**
- **38 months**
- **Avg seller age**
- **143 days**
## **Competition & brand share**
Clicks spread well past the top 5 (40% combined) — an open shelf where new products get seen.
**Brands**
**20 **▼falling
**Sellers**
**24**
**Top-5 brand share**
**61%**
Top 20: 100%
**Top-5 click share**
**40%**
Top 20: 72%
**Open market**
**34%**
- WEERTI21% - ANRABESS18% - YOGINGO10% - HovSiyla6% - TELALEO5% - RIKUAOU5%
## **Demand**
Weekly Amazon search volume, last 27 weeks — -74.8% search growth over the last 90 days.
30K20KSpike '26Jan '26Feb '26Mar '26Mar '26Apr '26May '26Jun '26
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/thermal-undershirt-for-women/trend)
## **Top thermal undershirt for women search terms**
- **white thermal long sleeve women**58K/yr-76.8%0.7% conv. - **thermal undershirt for women**62K/yr-76.3%0.4% conv. - **thermal top**42K/yr-74.8%0.3% conv. - **black thermal long sleeve women**43K/yr-77.7%1.0% conv. - **fleece lined shirt women**49K/yr-81.5%0.2% conv. - **womens base layer top**28K/yr-68.2%0.1% conv. - **fleece long sleeve shirt women**32K/yr-71.6%0.3% conv. - **womens thermal underwear tops**20K/yr-51.1%0.0% conv. - **heat tech long sleeve women**43K/yr-84.1%0.7% conv. - **thermal shirt women**29K/yr-73.2%0.6% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/thermal-undershirt-for-women/search-terms)
## **Top thermal undershirt for women 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%$7K20%$15K30%$22K40%$30K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**WEERTI Thermal Underwear for Women Long Johns with Fleece Lined Base Layer Women Cold Weather Top Bottom-Black M**WEERTI**$26.43**4.5★12,937 rev](https://www.amazon.com/dp/B088H5DWV3) [2**Womens Long Sleeve Thermal Underwear Lightweight Compression Baselayer Shirt Women Clothing Premium Comfort Winter Tops Black**YOGINGO**$12.62**4.6★808 rev](https://www.amazon.com/dp/B0CFFDYV1B) [3**HovSiyla 3 Pack Womens Thermal Compression Long Sleeve Shirts Fleece Lined Tops Crew Neck Slim Fit Base Layer Ladies Underwear 3 Black Medium**HovSiyla**$22.83**4.7★614 rev](https://www.amazon.com/dp/B0D72HLQW3) [4**ANRABESS Womens Long Sleeve Thermal Shirts Slim Fit Basic Tee Tops Warm Fleece Undershirts 2026 Fall Winter Layer Outfits Black Small**ANRABESS**$9.98**4.6★1,101 rev](https://www.amazon.com/dp/B0F9WD8VFC) [5**NebuKinex 5 Pack Long Sleeve Thermal Shirts for Women Ultra Soft Fleece-Lined Crew Neck Workout Baselayer Tops 3Black+Grey+Blue-M**NebuKinex**$32.44**4.6★885 rev](https://www.amazon.com/dp/B0D7Q9G89K)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Long Sleeve Shirts for Women Fall Fashion Basic Crop Top Womens Going Out Outfits Y2k Clothes White M**Adeline Mode**$8.44**295 rev7mo ago](https://www.amazon.com/dp/B0FRMBGTLQ) [**RIKUAOU Long Sleeve Thermal Shirts for Women Fleece-Lined Undershirts Base Layer Tops for Running Workout Cold Weather Black**RIKUAOU**$17.86**80 rev8mo ago](https://www.amazon.com/dp/B0FL7L55WS) [**RIKUAOU Long Sleeve Thermal Shirts for Women Fleece-Lined Undershirts Base Layer Tops for Running Workout Cold Weather White**RIKUAOU**$16.43**80 rev8mo ago](https://www.amazon.com/dp/B0FL7MZ7YL) [**Kinglaman 5 Pack Women Long Sleeve Thermal Shirts Crew Neck Fleece Lined Base Layer Underwear Cold Weather Tops 2 Black 2 White 1 Heather Grey Medium**Kinglaman**$29.03**161 rev9mo ago](https://www.amazon.com/dp/B0FD9RVPKH) [**HiZiTi Thermal Underwear for Women Long Johns Set Fleece Lined Warm Black Base Layer Long Sleeve Shirt Leggings for Cold Weather Top & Bottom Skiing Pajama Winter M**HiZiTi**$15.63**972 rev10mo ago](https://www.amazon.com/dp/B0FHKLSDR4)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**RIKUAOU Long Sleeve Thermal Shirts for Women Fleece-Lined Undershirts Base Layer Tops for Running Workout Cold Weather Black**RIKUAOU**$17.86**4.5★**▲ 174%**](https://www.amazon.com/dp/B0FL7L55WS) [**WEERTI Thermal Underwear for Women Long Johns with Fleece Lined Base Layer Women Cold Weather Top Bottom-Black M**WEERTI**$26.43**4.5★**▲ 150%**](https://www.amazon.com/dp/B088H5DWV3) [**floralhue Underscrub Long Sleeve Women Scrub Undershirts Crew Neck Comfort Tee with Ultra Soft Fabric Black M**floralhue**$9.72**4.7★**▲ 148%**](https://www.amazon.com/dp/B0F5HKFLSS) [**COZYFIT Womens Underscrub Tee Comfort V-Neck Long Sleeve Undershirt with Soft & Easy Care Fabric Black**COZYFIT**$10.15**4.6★**▲ 125%**](https://www.amazon.com/dp/B0FHVBDCRK) [**HiZiTi Thermal Underwear for Women Long Johns Set Fleece Lined Warm Black Base Layer Long Sleeve Shirt Leggings for Cold Weather Top & Bottom Skiing Pajama Winter M**HiZiTi**$15.63**4.6★**▲ 121%**](https://www.amazon.com/dp/B0FHKLSDR4)
**~~View all trending →~~**
## **What buyers say about thermal undershirt for women**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**18%
*“Fit like a glove”*
**Warmth**18%
*“Keep me warm”*
**Comfort-Overall**10%
*“It's comfortable”*
**Soft Feel**8%
*“Amazing softness”*
**Quality-Overall**6%
*“Excellent product”*
**Material Quality**5%
*“Good quality material”*
**Color**4%
*“colors are true”*
**Stretchability/Expandability/Elasticity**4%
*“The fabric is stretchy”*
**Value For Money**3%
*“Good value”*
**Thickness**2%
*“Thick and warm”*
### **What buyers complain about **
**Size-Overall**21%
*“pretty tight”*
**Material Quality**5%
*“disappointing quality despite soft material”*
**Thickness**4%
*“not thick material”*
**Color**4%
*“White is not white”*
**Smell**3%
*“Came with a bad chemical smell”*
**Sleeve Fit**3%
*“Long sleeve”*
**Stitch/Finish/Polish**3%
*“Poor quality stitching”*
**Product Condition**3%
*“This item arrived used”*
**Transparency**2%
*“A bit transparent :/”*
**Stretchability/Expandability/Elasticity**2%
*“Also it does stretch”*
### **Top return reasons **
**Size-Overall**52%
**Length**9%
**Material Quality**7%
**Sleeve Fit**5%
**Chest Fit**4%
**Thin**3%
**Waist Fit**3%
**Advertised Vs Actual Product**2%
**Color**1%
**Arm Fit**1%
## **Common questions**
- **Is thermal undershirt for women profitable to sell on Amazon United States?**
- The niche generates $74K/yr across 42 tracked products. 5 of 11 products launched in the last 360 days are still selling. 90-day search growth is -74.8%. Flapen's verdict: Skip it (36/100).
- **How competitive is the thermal undershirt for women niche?**
- 20 brands and 24 sellers compete. The top 5 products take 40% of clicks and top 5 brands hold 61% of demand.
- **What do buyers complain about in thermal undershirt for women?**
- Top complaints mined from reviews: Size-Overall, Material Quality, Thickness. The return rate is 8.6% — above our launch gate.
- **What does it cost to enter the thermal undershirt for women niche?**
- Listings span $8.44–$34.25; the average listing price is $19.25 (sweet spot $15–$100). The average incumbent carries 2,706 reviews — the moat a new listing must climb.
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