---
title: "Thermal Underwear Mens — £112K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/fashion/thermal-underwear-mens"
last_updated: "2026-07-31T16:25:14.209Z"
locale: en
meta:
description: "Niche score 49/100 · £112K/yr market · 1.3M searches/yr · £13.07 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 49/100 · £112K/yr market · 1.3M searches/yr · £13.07 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Thermal Underwear Mens — £112K/yr Amazon UK Niche (2026) - Flapen"
---
# **thermal underwear mens**
**Skip it**
Soft demand (-77.4% this quarter) — this niche doesn't clear our bar today.
Market size 27Growth 0Conversion 8Competition 96Returns 56Price range 79Avg price 59Brand share 96Review moat 30Quality gap 65
**Competition**
**Incredible****15%**
top-5 click share — an open shelf
**Brand share**
**Incredible****33%**
top-5 brand share — no brand owns this niche
**Price range**
**Great****£6.37–£50.52**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Avg price**
**Good****£13.07**
avg listing price — sweet spot $15–$100
**Returns**
**Good****2.8%**
return rate — above 5% kills the launch gate
**Review moat**
**Okay****3,454.4**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Okay****£112K**
£112K/yr · 1.3M searches
**Conversion**
**Bad****0.7%**
search→purchase rate — share of searches ending in a sale
**Growth**
**Bad****-77.4%**
90-day search growth — must beat 0% to launch
**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=uk&signal=no_dominant_brand "Top brand's click share < 20%")
According to Flapen's Amazon United Kingdom niche tracking, thermal underwear mens is a £112K/yr Amazon United Kingdom market (1.3M searches/yr). The top 5 brands hold 33% of demand. Demand peaks in Jan–Nov–Dec. Verdict: Skip it — 49/100.
Data updated Jul 23, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **thermal underwear mens market data**
- **Units sold / yr**
- **20K–25K**
- avg 100–250/product
- **Revenue / yr**
- **£261K–£327K**
- units × avg price
- **Conversion rate**
- **0.7%**
- **Avg BSR**
- **#584**
- **Page quality**
- **0%**
- **Prime**
- **90%**
- **Sponsored**
- **83%**
- **Out of stock**
- **27.0%**
- **Avg brand age**
- **45 months**
- **Avg seller age**
- **174 days**
## **Competition & brand share**
Clicks spread well past the top 5 (15% combined) — an open shelf where new products get seen.
**Brands**
**59 **▲rising
**Sellers**
**100**
**Top-5 brand share**
**33%**
Top 20: 78%
**Top-5 click share**
**15%**
Top 20: 40%
**Open market**
**61%**
- BENNIES8% - wirarpa7% - NOOYME7% - Heatwave Thermalwear6% - Niksa5% - MOBIUSPHY5%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -77.4% search growth over the last 90 days.
175K125KSpike '24Black Friday '24Holiday '24Spike '25Black Friday '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jan, Nov, Dec · busiest ÷ quietest = 32.0×
[**Open Trend **](https://flapen.com/research/uk/fashion/thermal-underwear-mens/trend)
## **Top thermal underwear mens search terms**
- **base layers men**117K/yr-66.7%0.6% conv. - **thermal**116K/yr-68.3%0.2% conv. - **base layer**35K/yr-53.1%0.4% conv. - **thermals**93K/yr-82.2%0.5% conv. - **thermal underwear mens**98K/yr-76.9%0.9% conv. - **thermals men**100K/yr-80.7%1.4% conv. - **mens thermal top**59K/yr-78.4%1.2% conv. - **mens thermal underwear**72K/yr-74.1%0.3% conv. - **thermals womens**44K/yr-74.0%1.4% conv. - **thermal top for men**82K/yr-86.1%1.0% conv. [**All search terms **](https://flapen.com/research/uk/fashion/thermal-underwear-mens/search-terms)
## **Top thermal underwear mens 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%2%£2K4%£4K6%£7K8%£9K1101001K10K100K 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**BENNIES Thermal Underwear Mens Set Mens Thermals Top and Bottoms Long Sleeve Tops Long Johns Thermal Base Layer Thermals Mens Thermal Underwear T Shirt for Winter Ski Sports Black L**BENNIES**£14.41**4.5★2,513 rev](https://www.amazon.co.uk/dp/B0D8VGVGHQ) [2**Thermal Underwear Mens Set Mens Thermals Top and Bottoms Long Sleeve Tops Long Johns Thermal Base Layer Thermals Mens Thermal Underwear for Winter Ski Sports M**BENNIES**£14.38**4.5★2,513 rev](https://www.amazon.co.uk/dp/B0D8VHVBB6) [3**Molten Creek Mens Thermal Underwear Set Extra Warm Thermal Top Bottom Long Johns Set Vests & Trousers for Winter Soft & Breathable (Black- Full Sleeve Set S)**Molten Creek**£9.45**3.8★26 rev](https://www.amazon.co.uk/dp/B0DJ8XJW22) [4**Mens Thermal Underwear Set Thermal Underwear Men Winter Soft Functional Underwear Sleeve Top Long Johns Set Quick Dry Base Layer Sport Compression Suit for Workout Skiing Running Hiking Cycling XL**MOBIUSPHY**£12.54**4.5★16,349 rev](https://www.amazon.co.uk/dp/B07WSLRBV2) [5**Sillictor Mens Thermal Top Long Sleeve Quick Dry Cycling Running Base Layer Mens Ski Underlayer Fleece Compression Sports Hiking Football Training T Shirts High Wicking Muscle Support 3235 Black M**Sillictor**£11.79**4.4★120 rev](https://www.amazon.co.uk/dp/B0CGQ2MJ3H)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**The Fancy Dress Mens Thermal Underwear Set Base Layer Vest Top Long Johns Set Ultra Soft Thermals Leggings For Winter Skiing Workout LS-Black-XXL**The Fancy Dress**£6.96**3 rev7mo ago](https://www.amazon.co.uk/dp/B0G4NFV48Y) [**Runhit Mens Black Compression Long Sleeve T Shirt UPF 50+ Quick Dry Sport Base Layer Tops Mens Football Underlayer for Running Gym Cycling Golf Training M**Runhit**£9.28**104 rev9mo ago](https://www.amazon.co.uk/dp/B0FS8Y1QZ8) [**wirarpa Mens Thermal Underwear Set Long Johns Top & Bottom Dark Grey XL**wirarpa**£15.35**367 rev11mo ago](https://www.amazon.co.uk/dp/B0FNRDNTVZ) [**wirarpa Womens Thermal Underwear Set Fleece Lined Top & Bottom Black S**wirarpa**£14.13**416 rev11mo ago](https://www.amazon.co.uk/dp/B0FNR7J342) [**wirarpa Mens Thermal Underwear Set Cotton Long Johns Base Layer Black S**wirarpa**£14.39**859 rev11mo ago](https://www.amazon.co.uk/dp/B0FL2B4QYJ)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**The Fancy Dress Mens Thermal Underwear Set Base Layer Vest Top Long Johns Set Ultra Soft Thermals Leggings For Winter Skiing Workout LS-Black-XXL**The Fancy Dress**£6.96**4.2★**▲ 308%**](https://www.amazon.co.uk/dp/B0G4NFV48Y) [**Tigersay Compression Shirt Men Short Sleeve T-Shirt Base Layer Top with Quick Dry Performance for Gym Running Workout & Sports**Tigersay**£13.13**4.4★**▲ 304%**](https://www.amazon.co.uk/dp/B0FG86Z1RF) [**NOOYME Mens Thermal Underwear Mens Thermals Long Johns Compression Top Men & Mens Leggings Quick Dry Long Johns For Men Thermal Black-green**NOOYME**£18.47**4.4★**▲ 295%**](https://www.amazon.co.uk/dp/B09BV3YYYX) [**Runhit Mens Black Compression Long Sleeve T Shirt UPF 50+ Quick Dry Sport Base Layer Tops Mens Football Underlayer for Running Gym Cycling Golf Training M**Runhit**£9.28**4.6★**▲ 266%**](https://www.amazon.co.uk/dp/B0FS8Y1QZ8) [**Molten Creek Mens Thermal Underwear Set Extra Warm Thermal Top Bottom Long Johns Set Vests & Trousers for Winter Soft & Breathable (Black- Full Sleeve Set S)**Molten Creek**£9.45**3.8★**▲ 217%**](https://www.amazon.co.uk/dp/B0DJ8XJW22)
**~~View all trending →~~**
## **What buyers say about thermal underwear mens**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Warmth**26%
*“keep you warm”*
**Size-Overall**14%
*“Amazing fit”*
**Comfort-Overall**11%
*“Comfy and warm”*
**Quality-Overall**11%
*“Seems well made”*
**Value For Money**8%
*“Good Value”*
**Soft Feel**3%
*“Lovely and soft”*
**Thickness**2%
*“Lovely thick cozy socks”*
**Weather Proof**2%
*“Perfect for the cold weather”*
**Material Quality**2%
*“Breathable material, easy to use”*
**Advertised Vs Actual Product**1%
*“As described”*
### **What buyers complain about **
**Size-Overall**18%
*“Bit short”*
**Quality-Overall**14%
*“Rubbish, cheap and certainly dont fit purpose”*
**Thickness**12%
*“not as thick as I thought”*
**Warmth**8%
*“it wont keep you warm”*
**Material Quality**3%
*“nice colours however the material looked snagged”*
**Lining Quality**3%
*“no fleece lining”*
**Thin**3%
*“Too thin”*
**Stitch/Finish/Polish**2%
*“Not made that well the stitches are not good”*
**Advertised Vs Actual Product**2%
*“Misleading”*
**Comfort-Overall**1%
*“These are not going to be comfy over a long day even without walking”*
### **Top return reasons **
**Size-Overall**53%
**Quality-Overall**5%
**Material Quality**5%
**Thin**4%
**Length**3%
**Advertised Vs Actual Product**3%
**Stitch/Finish/Polish**2%
**Comfort-Overall**2%
**Warmth**2%
**Gap/Hole**2%
## **Common questions**
- **Is thermal underwear mens profitable to sell on Amazon United Kingdom?**
- The niche generates £112K/yr across 156 tracked products. 0 of 32 products launched in the last 360 days are still selling. 90-day search growth is -77.4%. Flapen's verdict: Skip it (49/100).
- **How competitive is the thermal underwear mens niche?**
- 59 brands and 100 sellers compete. The top 5 products take 15% of clicks and top 5 brands hold 33% of demand.
- **What do buyers complain about in thermal underwear mens?**
- Top complaints mined from reviews: Size-Overall, Quality-Overall, Thickness. The return rate is 2.8%.
- **When does demand for thermal underwear mens peak?**
- Demand peaks in Jan–Nov–Dec; the busiest month runs 32.0× the quietest.
- **What does it cost to enter the thermal underwear mens niche?**
- Listings span £6.37–£50.52; the average listing price is £13.07 (sweet spot $15–$100). The average incumbent carries 3,454 reviews — the moat a new listing must climb.
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