Is thermal underwear for men profitable to sell on Amazon United States?

The niche generates $1.9M/yr across 7 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is -86.3%. Flapen's verdict: Skip it (31/100).

How competitive is the thermal underwear for men niche?

5 brands and 12 sellers compete. The top 5 products take 93% of clicks and top 5 brands hold 100% of demand.

What do buyers complain about in thermal underwear for men?

Top complaints mined from reviews: Size-Overall, Material Quality, Comfort-Overall. The return rate is 6.7% — above our launch gate.

When does demand for thermal underwear for men peak?

Demand peaks in Jan–Feb–Nov–Dec; the busiest month runs 31.1× the quietest.

What does it cost to enter the thermal underwear for men niche?

Listings span $8.91–$27.82; the average listing price is $19.94 (sweet spot $15–$100). The average incumbent carries 9,521 reviews — the moat a new listing must climb.

thermal underwear for men

Skip it

Soft demand (-86.3% this quarter) — this niche doesn't clear our bar today.

Market size

Great$1.9M

$1.9M/yr · 7.0M searches

Avg price

Great$19.94

avg listing price — sweet spot $15–$100

Price range

Good$8.91–$27.82

cheapest to priciest tracked listing — scored on the share inside $15–$100

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Review moat

Bad9,521.43

avg incumbent reviews — the moat a new listing must climb

Returns

Bad6.7%

return rate — above 5% kills the launch gate

Conversion

Bad1.3%

search→purchase rate — share of searches ending in a sale

Competition

Bad93%

top-5 click share — a locked-up shelf

Growth

Bad-86.3%

90-day search growth — must beat 0% to launch

Brand share

Bad100%

top-5 brand share — brand-locked demand

Signals High Returns

According to Flapen's Amazon United States niche tracking, thermal underwear for men is a $1.9M/yr Amazon United States market (7.0M searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Jan–Feb–Nov–Dec. Verdict: Skip it — 31/100.

Data updated Jul 21, 2026 · scored weekly · How we score niches

thermal underwear for men market data

Units sold / yr: 100K–125K; avg 6,000–8,000/product
Revenue / yr: $2.0M–$2.5M; units × avg price
Conversion rate: 1.3%
Avg BSR: #8
Page quality: 0%
Prime: 100%
Sponsored: 100%
Out of stock: 0.0%
Avg brand age: 47 months
Avg seller age: 148 days

Competition & brand share

The top 5 products capture 93% of clicks — a locked-up shelf that new listings rarely crack.

Brands

5 falling

Sellers

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

93%

Top 20: 100%

Open market

WEERTI75%
JZCreater12%
NY Threads6%
CL convallaria4%
Fruit of the Loom4%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -86.3% search growth over the last 90 days.

Peak months: Jan, Feb, Nov, Dec · busiest ÷ quietest = 31.1×

Open Trend

Top thermal underwear for men search terms

thermal underwear for men1.6M/yr -92.8%1.1% conv.
thermal359K/yr -59.1%0.1% conv.
long johns for men thermal946K/yr -92.0%1.0% conv.
long underwear mens379K/yr -83.4%0.9% conv.
mens thermal underwear516K/yr -88.9%0.7% conv.
thermals for men417K/yr -85.3%0.7% conv.
long johns370K/yr -86.3%0.5% conv.
base layer men213K/yr -78.6%0.5% conv.
thermals258K/yr -79.7%0.4% conv.
thermal pants men312K/yr -86.9%0.6% conv.

All search terms

Top thermal underwear for men 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 7 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

WEERTI Thermal Underwear for Men Long Johns with Fleece Lined Base Layer Men Cold Weather Top Bottom-Black L

WEERTI$27.824.6★13,949 rev

JZCreater Thermal Underwear for Men Mens Long Johns Thermal Underwear Set Fleece Lined Base Layer for Cold Weather Black

JZCreater$16.084.6★3,126 rev

WEERTI Thermal Underwear for Women Long Johns with Fleece Lined Base Layer Women Cold Weather Top Bottom-Black M

WEERTI$26.424.5★12,952 rev

NY Threads Thermal Underwear for Men Mens Long Johns Set Base Layer Top and Bottom for Cold Weather Small Black

NY Threads$8.914.3★52 rev

CL convallaria Thermal Underwear for Men Long Johns Winter Hunting Gear Sport Base Layer Top and Bottom Set Midweight Black L

CL convallaria$22.164.6★11,830 rev

Newest

by launch date

Fruit of The Loom Mens Recycled Waffle Thermal Underwear Bottom Black Medium

Fruit of the Loom$17.5124,409 rev

9mo ago

NY Threads Thermal Underwear for Men Mens Long Johns Set Base Layer Top and Bottom for Cold Weather Small Black

NY Threads$8.9152 rev

10mo ago

1 or 3 Pack Mens Long Johns Thermal Pants Fleece Lined Lightweight Base Layer Bottoms Compression Leggings Winter Gear

JZCreater$20.66332 rev

1y ago

CL convallaria Thermal Underwear for Men Long Johns Winter Hunting Gear Sport Base Layer Top and Bottom Set Midweight Black L

CL convallaria$22.1611,830 rev

5y ago

WEERTI Thermal Underwear for Men Long Johns with Fleece Lined Base Layer Men Cold Weather Top Bottom-Black L

WEERTI$27.8213,949 rev

6y ago

What buyers say about thermal underwear for men

What buyers praise and complain about, mined from review topics.

What buyers love

Warmth33%

“Nice and Warm”

Size-Overall15%

“Nice and snug”

Comfort-Overall11%

“Comfortable to wear”

Quality-Overall7%

“well made”

Value For Money5%

“Worth it”

Soft Feel5%

“So soft”

Advertised Vs Actual Product4%

“Just as advertised”

Weather Proof3%

“it has stood him in good stead in below-freezing temperatures”

Weight Light2%

“not heavy”

Material Quality2%

“Super warm material”

What buyers complain about

Size-Overall14%

“Recommend sizing up as its tight”

Material Quality8%

“due to the material thinness”

Comfort-Overall4%

“the waist band is very uncomfortable”

Thickness3%

“Thicker than I expected”

Lining Quality3%

“The inner lining is a brushed texture”

Ease Of Cleaning3%

“Mine came dirty”

Color3%

“Go for any color other than black if you're going to get some”

Ease Of Use3%

“Very inconvenient”

Machine Wash Suitability3%

“After washing 2 times with my work clothes, I felt like my work clothes got the micro fibers stuck to them and it was poking me all night”

Stitch/Finish/Polish3%

“The stitching is improperly done, with loose threads unraveling at the edges and seams”

Top return reasons

Size-Overall52%

Waist Fit6%

Material Quality6%

Length6%

Chest Fit4%

Thin3%

Warmth3%

Advertised Vs Actual Product3%

Value For Money2%

Sleeve Fit2%

Common questions

Is thermal underwear for men profitable to sell on Amazon United States?: The niche generates $1.9M/yr across 7 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is -86.3%. Flapen's verdict: Skip it (31/100).
How competitive is the thermal underwear for men niche?: 5 brands and 12 sellers compete. The top 5 products take 93% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in thermal underwear for men?: Top complaints mined from reviews: Size-Overall, Material Quality, Comfort-Overall. The return rate is 6.7% — above our launch gate.
When does demand for thermal underwear for men peak?: Demand peaks in Jan–Feb–Nov–Dec; the busiest month runs 31.1× the quietest.
What does it cost to enter the thermal underwear for men niche?: Listings span $8.91–$27.82; the average listing price is $19.94 (sweet spot $15–$100). The average incumbent carries 9,521 reviews — the moat a new listing must climb.