---
title: "Thermajohn — $27K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/thermajohn"
last_updated: "2026-08-09T22:11:13.559Z"
locale: en
meta:
description: "Niche score 33/100 · $27K/yr market · 100K searches/yr · $43.73 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 33/100 · $27K/yr market · 100K searches/yr · $43.73 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Thermajohn — $27K/yr Amazon US Niche (2026) - Flapen"
---
# **thermajohn**
**Skip it**
Soft demand (-71.8% this quarter) — this niche doesn't clear our bar today.
Market size 7Growth 0Conversion 8Competition 73Returns 18Price range 31Avg price 95Brand share 76Review moat 23Quality gap 32
**Avg price**
**Incredible****$43.73**
avg listing price — sweet spot $15–$100
**Brand share**
**Great****59%**
top-5 brand share — no brand owns this niche
**Competition**
**Good****41%**
top-5 click share — leaders hold, buyers still browse
**Quality gap**
**Okay****4.6★**
avg incumbent rating — lower means beatable quality
**Price range**
**Okay****$8.49–$278.82**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Review moat**
**Bad****6,974.21**
avg incumbent reviews — the moat a new listing must climb
**Returns**
**Bad****6.9%**
return rate — above 5% kills the launch gate
**Conversion**
**Bad****0.6%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Bad****$27K**
$27K/yr · 100K searches
**Growth**
**Bad****-71.8%**
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, thermajohn is a $27K/yr Amazon United States market (100K searches/yr). The top 5 brands hold 59% of demand. Demand peaks in Jan–Feb–Nov–Dec. Verdict: Skip it — 33/100.
Data updated Jul 14, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **thermajohn market data**
- **Units sold / yr**
- **1K–1K**
- avg 0–100/product
- **Revenue / yr**
- **$44K–$55K**
- units × avg price
- **Conversion rate**
- **0.6%**
- **Avg BSR**
- **#3,608**
- **Page quality**
- **0%**
- **Prime**
- **90%**
- **Sponsored**
- **79%**
- **Out of stock**
- **3.3%**
- **Avg brand age**
- **45 months**
- **Avg seller age**
- **152 days**
## **Competition & brand share**
The top 5 products take 41% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**32 **▲rising
**Sellers**
**117**
**Top-5 brand share**
**59%**
Top 20: 91%
**Top-5 click share**
**41%**
Top 20: 70%
**Open market**
**37%**
- WEERTI30% - CL convallaria12% - Carhartt8% - Cuddl Duds5% - Merino.tech4% - WICKED STOCK4%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -71.8% search growth over the last 90 days.
10K6KPrime Day '24Spike '24Holiday '24Spike '25Prime Day '25Black Friday '25Holiday '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jan, Feb, Nov, Dec · busiest ÷ quietest = 17.2×
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/thermajohn/trend)
## **Top thermajohn search terms**
- **motorcycle base layer**7K/yr+53.0%0.1% conv. - **moisture wicking base layer**8K/yr-11.3%0.0% conv. - **lightweight base layer men**5K/yr-46.7%0.3% conv. - **hiking base layer men**3K/yr-22.9%1.2% conv. - **hot chillys thermals womens**11K/yr-90.3%0.8% conv. - **hot chilis thermals women**10K/yr-91.1%0.2% conv. - **hunting base layer men**16K/yr-70.7%0.0% conv. - **running base layer**3K/yr-53.7%0.7% conv. - **warm base layer**4K/yr-72.1%0.4% conv. - **base layer set**4K/yr-79.8%0.8% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/thermajohn/search-terms)
## **Top thermajohn 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%3%$7996%$2K9%$2K12%$3K1101001K10K100K 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 Men Long Johns with Fleece Lined Base Layer Men Cold Weather Top Bottom-Black L**WEERTI**$27.81**4.5★13,922 rev](https://www.amazon.com/dp/B088JYX7YN) [2**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) [3**CL convallaria Thermal Underwear for Men Long Johns Winter Hunting Gear Sport Base Layer Top and Bottom Set Midweight Black L**CL convallaria**$22.15**4.6★11,805 rev](https://www.amazon.com/dp/B08DQYVLZ4) [4**WEERTI Thermal Underwear for Men Long Johns with Fleece Lined Base Layer Men Cold Weather Top Bottom-Black M**WEERTI**$27.86**4.5★13,922 rev](https://www.amazon.com/dp/B088K6XSJ1) [5**Carhartt Mens Force Midweight Stretch Base Layer Crewneck Black Heather X-Large**Carhartt**$25.84**5.0★28 rev](https://www.amazon.com/dp/B0F6VWZ5ZX)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**KEMIMOTO Motorcycle Mesh Armored Shirt for Men with CE1 Certified Protective Gear Breathable Soft for All Seasons Suitable for Motorcycling Riding Cycling Off-Road Sports**KEMIMOTO**$66.13**28 rev4mo ago](https://www.amazon.com/dp/B0GH4MR3FP) [**KEMIMOTO Motorcycle Jacket Men with CE Armor ESA Rebound Material Breathable Motorcyce Mesh Jacket**KEMIMOTO**$79.29**23 rev7mo ago](https://www.amazon.com/dp/B0G3PP3SV6) [**Compression Shirts for Men - Long Sleeve Black Workout Base Layer Athletic Gym Tops Quick Dry Running Undershirts**BOOJO**$8.49**310 rev11mo ago](https://www.amazon.com/dp/B0FHQ4RWHV) [**X-thud Breathable Mens Long Sleeve Base Layer Shirt - Quick Dry & Moisture Wicking for Sports Hiking Gym Black XL**X-thud**$9.99**84 rev1y ago](https://www.amazon.com/dp/B0FH26PSH8) [**Carhartt Mens Force Midweight Stretch Base Layer Crewneck Black Heather X-Large**Carhartt**$25.84**28 rev1y ago](https://www.amazon.com/dp/B0F6VWZ5ZX)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**KEMIMOTO Motorcycle Jacket Men with CE Armor ESA Rebound Material Breathable Motorcyce Mesh Jacket**KEMIMOTO**$79.29**4.3★**▲ 170%**](https://www.amazon.com/dp/B0G3PP3SV6) [**WOSAWE Mens Summer Motorcycle Pants CE Level Armor Pads Insert Motorbike Riding Elastic Slim Fit Biker Legging L Black**WOSAWE**$50.28**4.7★**▲ 168%**](https://www.amazon.com/dp/B0F6LV6K6Q) [**KEMIMOTO Motorcycle Mesh Armored Shirt for Men with CE1 Certified Protective Gear Breathable Soft for All Seasons Suitable for Motorcycling Riding Cycling Off-Road Sports**KEMIMOTO**$66.13**4.3★**▲ 167%**](https://www.amazon.com/dp/B0GH4MR3FP) [**Carhartt Mens Force Midweight Stretch Base Layer Crewneck Black Heather X-Large**Carhartt**$25.84**5.0★**▲ 146%**](https://www.amazon.com/dp/B0F6VWZ5ZX) [**KLIM Mens Tactical LS Shirt Long Sleeve Motorcycle Padded Compression Top - Size Large - Black**KLIM**$273.13**5.0★**▲ 142%**](https://www.amazon.com/dp/B0CWVQ7K8F)
**~~View all trending →~~**
## **What buyers say about thermajohn**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Warmth**22%
*“Toasty warm”*
**Size-Overall**21%
*“fits as expected”*
**Quality-Overall**11%
*“The quality is solid”*
**Comfort-Overall**9%
*“Comfortable to wear”*
**Value For Money**5%
*“they are affordable”*
**Soft Feel**5%
*“Its very soft”*
**Material Quality**3%
*“The material is strong”*
**Advertised Vs Actual Product**3%
*“Just what I wanted”*
**Weight Light**2%
*“The shirts are light weight”*
**Weather Proof**2%
*“Perfect for around the house or non extreme weather”*
### **What buyers complain about **
**Size-Overall**26%
*“Too short”*
**Thickness**4%
*“Too thick for regular shoes”*
**Quality-Overall**4%
*“Poor performance”*
**Material Quality**3%
*“This type of material has a tendency to hold pissy smells”*
**Warmth**3%
*“Would not recommend for warmth”*
**Stitch/Finish/Polish**3%
*“causing the stitching to come apart”*
**Durability**3%
*“Ruined after one day”*
**Smell**2%
*“it has a strange smell”*
**Color**2%
*“its not really black its more of a dark gray”*
**Comfort-Overall**2%
*“not very comfortable”*
### **Top return reasons **
**Size-Overall**56%
**Length**5%
**Material Quality**5%
**Waist Fit**5%
**Chest Fit**4%
**Thin**3%
**Advertised Vs Actual Product**2%
**Sleeve Fit**2%
**Warmth**2%
**Compression**2%
## **Common questions**
- **Is thermajohn profitable to sell on Amazon United States?**
- The niche generates $27K/yr across 58 tracked products. 4 of 5 products launched in the last 360 days are still selling. 90-day search growth is -71.8%. Flapen's verdict: Skip it (33/100).
- **How competitive is the thermajohn niche?**
- 32 brands and 117 sellers compete. The top 5 products take 41% of clicks and top 5 brands hold 59% of demand.
- **What do buyers complain about in thermajohn?**
- Top complaints mined from reviews: Size-Overall, Thickness, Quality-Overall. The return rate is 6.9% — above our launch gate.
- **When does demand for thermajohn peak?**
- Demand peaks in Jan–Feb–Nov–Dec; the busiest month runs 17.2× the quietest.
- **What does it cost to enter the thermajohn niche?**
- Listings span $8.49–$278.82; the average listing price is $43.73 (sweet spot $15–$100). The average incumbent carries 6,974 reviews — the moat a new listing must climb.
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