union suit
Skip itSoft demand (-74.6% this quarter) — this niche doesn't clear our bar today.
Avg price
Incredible$32.37avg listing price — sweet spot $15–$100
Price range
Great$14.15–$75.13cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Great28%top-5 click share — an open shelf
Quality gap
Great4.3★avg incumbent rating — lower means beatable quality
Brand share
Good68%top-5 brand share — brands hold most of the demand
Review moat
Okay1,640.39avg incumbent reviews — the moat a new listing must climb
Returns
Bad7.0%return rate — above 5% kills the launch gate
Market size
Bad$39K$39K/yr · 236K searches
Conversion
Bad0.5%search→purchase rate — share of searches ending in a sale
Growth
Bad-74.6%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, union suit is a $39K/yr Amazon United States market (236K searches/yr). The top 5 brands hold 68% of demand. Demand peaks in Jan–Nov–Dec. Verdict: Skip it — 42/100.
Data updated Jul 21, 2026 · scored weekly · How we score niches
union suit market data
- Units sold / yr
- 1K–1K
- avg 0–100/product
- Revenue / yr
- $32K–$40K
- units × avg price
- Conversion rate
- 0.5%
- Avg BSR
- #11,467
- Page quality
- 0%
- Prime
- 97%
- Sponsored
- 78%
- Out of stock
- 11.0%
- Avg brand age
- 47 months
- Avg seller age
- 186 days
Competition & brand share
Clicks spread well past the top 5 (28% combined) — an open shelf where new products get seen.Brands
30 rising
Sellers
50
Top-5 brand share
68%
Top 20: 96%
Top-5 click share
28%
Top 20: 63%
Open market
28%
- Fruit of the Loom25%
- Indera22%
- Ekouaer10%
- GYMAPE6%
- Carhartt5%
- August Alley4%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -74.6% search growth over the last 90 days.Peak months: Jan, Nov, Dec · busiest ÷ quietest = 20.7×
Top union suit search terms
- union suit69K/yr
- mens union suit38K/yr
- union suit men52K/yr
- union suit with flap25K/yr
- union suits for men5K/yr
- mens thermal underwear union suits9K/yr
- red union suit5K/yr
- union suit pajamas5K/yr
- mens union suit with back flap5K/yr
- thermal onesie men7K/yr
Top union suit 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.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Fruit of the Loom Mens Premium Thermal Union Suit Black Large
Fruit of the Loom$28.064.5★3,872 rev
Indera Mens Cotton Rib Knit Union Suit Red Large Tall
Indera$33.714.4★3,212 rev
Fruit of the Loom Mens Premium Thermal Union Suit Red Medium
Fruit of the Loom$27.164.5★3,872 rev
Ekouaer Mens One Piece Pajama Thermal Full Button Union Suit Long Sleeve Onesie with Button Flap Red M
Ekouaer$23.044.4★570 rev
Carhartt Mens Midweight Cotton Blend Waffle Union Suit Black Medium
Carhartt$66.294.3★2,540 rev
Newest
by launch date
EEOST Adaptive Clothing for Men Anti-Strip Back-Zip Cotton Romper Elderly Care Onesie for Special Needs and Disabilities (Charcoal Grey M)
EEOST$37.3836 rev
Fruit of the Loom Mens Premium Thermal Union Suit Black Large
Fruit of the Loom$28.063,872 rev
Fruit of the Loom Mens Premium Thermal Union Suit Red Medium
Fruit of the Loom$27.163,872 rev
Fruit of The Loom Mens Premium Thermal Union Suit Oatmeal X-Large
Fruit of the Loom$27.053,872 rev
Fruit of The Loom Mens Premium Thermal Union Suit Oatmeal Medium
Fruit of the Loom$26.583,872 rev
Trending
90-day click momentum
Ekouaer Mens One Piece Pajama Thermal Full Button Union Suit Long Sleeve Onesie with Button Flap Navy Blue M
Ekouaer$24.244.4★
WORK IDEA Mens Coveralls Long Sleeve 100% Cotton Twill Workwear Jumpsuit Relaxed Fit Black L
WORK IDEA$36.204.0★
Gertex Adult Lightweight Back-Zip Sleeper (Medium Heather Grey)
Gertex$53.644.2★
EEOST Adaptive Clothing for Men Anti-Strip Back-Zip Cotton Romper Elderly Care Onesie for Special Needs and Disabilities (Charcoal Grey M)
EEOST$37.383.7★
August Alley Mens Thermal Union Suits Long Sleeve One Piece Crew Neck Bodysuit Pajamas Button Down Classic Underwear(Khaki Large)
August Alley$31.084.0★
What buyers say about union suit
What buyers praise and complain about, mined from review topics.What buyers love
“Comfy and warm”
“Nice and snug”
“Extremely comfortable”
“Solid build quality”
“Good value”
“I like it, size is accurate and is soft”
“Exactly what I ordered it was perfect”
“The material is great, very thick and warm,”
“not heavy”
“my hatsune miku shirt stays clean”
What buyers complain about
“way oversized”
“They are about as thin as you can get”
“Uncomfortable”
“Its a cheap lightweight material”
“The legs, arms and torso are too long”
“Theres a hole in the back”
“Ends do not wrap on wrists and legs”
“Go for any color other than black if you're going to get some”
“They feel like cheap leggings”
“Way too expensive for what you get”
Top return reasons
Common questions
- Is union suit profitable to sell on Amazon United States?
- The niche generates $39K/yr across 79 tracked products. 0 of 22 products launched in the last 360 days are still selling. 90-day search growth is -74.6%. Flapen's verdict: Skip it (42/100).
- How competitive is the union suit niche?
- 30 brands and 50 sellers compete. The top 5 products take 28% of clicks and top 5 brands hold 68% of demand.
- What do buyers complain about in union suit?
- Top complaints mined from reviews: Size-Overall, Thickness, Comfort-Overall. The return rate is 7.0% — above our launch gate.
- When does demand for union suit peak?
- Demand peaks in Jan–Nov–Dec; the busiest month runs 20.7× the quietest.
- What does it cost to enter the union suit niche?
- Listings span $14.15–$75.13; the average listing price is $32.37 (sweet spot $15–$100). The average incumbent carries 1,640 reviews — the moat a new listing must climb.