rat onesie
Skip itA small market ($0/yr) — this niche doesn't clear our bar today.
Avg price
Incredible$35.39avg listing price — sweet spot $15–$100
Price range
Incredible$18.18–$91.30cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Great40%top-5 click share — an open shelf
Brand share
Okay79%top-5 brand share — brands hold most of the demand
Review moat
Okay2,073.89avg incumbent reviews — the moat a new listing must climb
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Growth
Bad-6.1%90-day search growth — must beat 0% to launch
Market size
Bad$0$0/yr · 66K searches
Conversion
Bad0.0%search→purchase rate — share of searches ending in a sale
Returns
Bad14.9%return rate — above 5% kills the launch gate
According to Flapen's Amazon United States niche tracking, rat onesie is a $0/yr Amazon United States market (66K searches/yr). The top 5 brands hold 79% of demand. Verdict: Skip it — 35/100.
Data updated Jul 21, 2026 · scored weekly · How we score niches
rat onesie market data
- Units sold / yr
- 500–750
- avg 0–100/product
- Revenue / yr
- $18K–$27K
- units × avg price
- Conversion rate
- 0.0%
- Avg BSR
- #74,545
- Page quality
- 0%
- Prime
- 94%
- Sponsored
- 75%
- Out of stock
- 15.9%
- Avg brand age
- 36 months
- Avg seller age
- 183 days
Competition & brand share
Clicks spread well past the top 5 (40% combined) — an open shelf where new products get seen.Brands
15 falling
Sellers
17
Top-5 brand share
79%
Top 20: 100%
Top-5 click share
40%
Top 20: 83%
Open market
16%
- NAMHTOM23%
- HMHMAWAHV20%
- Funziez!19%
- BWVQNO11%
- GKTOP6%
- ABENCA5%
- Open — no brand owns it (9 brands, 16%)
Demand
Weekly Amazon search volume, last 37 weeks — -6.1% search growth over the last 90 days.Top rat onesie search terms
- rat onesie26K/yr
- mouse onesie16K/yr
- rat onesie adult9K/yr
- mouse onesie adult8K/yr
- rat onsie4K/yr
- mouse onsie3K/yr
Top rat onesie 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
Funziez! Slim Fit Adult Onesie - Animal Halloween Costume - Plush Unisex One Piece Cosplay Suit for Women and Men
Funziez!$33.674.5★14,484 rev
HMHMAWAHV Adult Rat Onesie Mouse Halloween Costume Cozy Animal Pajamas One-Piece Cosplay Suit for Women and Men
HMHMAWAHV$32.174.6★46 rev
NAMHTOM Rat Costume Adult Women Rat Onesie Animal Pajamas Mouse Halloween Costumes Cartoon Cosplay Sleepwear for Women Men
NAMHTOM$35.204.4★94 rev
HMHMAWAHV Adult White Rat Onesie Mouse Halloween Costume Animal Cosplay One-Piece Pajamas for Women and Men
HMHMAWAHV$27.404.6★46 rev
HMHMAWAHV Adult Rat Onesie Mouse Halloween Costume Cozy Animal Pajamas One-Piece Cosplay Suit for Women and Men
HMHMAWAHV$29.994.6★46 rev
Newest
by launch date
BWVQNO Adult Mouse Costume Rat onesie Flannel Mouse Halloween Cosplay Costume Women Men
BWVQNO$34.368 rev
BWVQNO Adult Mouse Costume Rat onesie Flannel Mouse Halloween Cosplay Costume Women Men
BWVQNO$34.918 rev
BWVQNO Adult Mouse Costume Rat onesie Flannel Mouse Halloween Cosplay Costume Women Men
BWVQNO$34.368 rev
HMHMAWAHV Adult White Rat Onesie Mouse Halloween Costume Animal Cosplay One-Piece Pajamas for Women and Men
HMHMAWAHV$27.4046 rev
GKTOP Unisex Animal Onesie Pajamas Adult - Flannel Animal One Piece Costume Halloween Cosplay Party Sleepwear (US Alpha Large Regular Regular Mouse)
GKTOP$34.1011 rev
Trending
90-day click momentum
COSUSKET Snug Fit Unisex Adult Onesie Pajamas Flannel Pig Cosplay Animal One Piece Halloween Costume Sleepwear Homewear
COSUSKET$29.444.6★
HMHMAWAHV Adult White Rat Onesie Mouse Halloween Costume Animal Cosplay One-Piece Pajamas for Women and Men
HMHMAWAHV$27.404.6★
BWVQNO Adult Mouse Costume Rat onesie Flannel Mouse Halloween Cosplay Costume Women Men
BWVQNO$34.364.7★
ROC PARTY Novetly Animal Onesie Costume for Unisex Adult - Cozy One Piece Pajamas Sleepwear for Halloween Cosplay & Parties (Mouse Large)
ROC PARTY$31.694.5★
BWVQNO Adult Mouse Costume Rat onesie Flannel Mouse Halloween Cosplay Costume Women Men
BWVQNO$34.914.7★
What buyers say about rat onesie
What buyers praise and complain about, mined from review topics.What buyers love
“Fit is as expected”
“Fantastic and cozy choice”
“It's comfortable”
“Very cute, soft, and comfy mouse onsie”
“the material feels soft, warm, and comfortable”
“Good value”
“It did wash off well”
“Its super cute and isnt flimsy and cheap feeling as I had thought it would be”
“The product is accurately displayed in advertisement”
“The zipper makes it easy to get on and off, and the pockets are a nice practical touch”
What buyers complain about
“A little small”
“seams are fragile”
“The fabric is moderately thick and fuzzy”
“my right arm missed the hole”
“unfortunately a used item was sent”
Top return reasons
Common questions
- Is rat onesie profitable to sell on Amazon United States?
- The niche generates $0/yr across 36 tracked products. 0 of 9 products launched in the last 360 days are still selling. 90-day search growth is -6.1%. Flapen's verdict: Skip it (35/100).
- How competitive is the rat onesie niche?
- 15 brands and 17 sellers compete. The top 5 products take 40% of clicks and top 5 brands hold 79% of demand.
- What do buyers complain about in rat onesie?
- Top complaints mined from reviews: Size-Overall, Stitch/Finish/Polish, Thickness. The return rate is 14.9% — above our launch gate.
- What does it cost to enter the rat onesie niche?
- Listings span $18.18–$91.30; the average listing price is $35.39 (sweet spot $15–$100). The average incumbent carries 2,074 reviews — the moat a new listing must climb.