---
title: "Mothman Onesie — $376/mo Amazon US Product Research (2026)"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/mothman-onesie"
last_updated: "2026-08-12T06:26:14.652Z"
locale: en
meta:
description: "Amazon product research for mothman onesie: $376/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for mothman onesie: $376/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "Mothman Onesie — $376/mo Amazon US Product Research (2026)"
---
# **Mothman Onesie**
**Skip it**
A small market ($5K/yr) — this niche doesn't clear our bar today.
Market size 1Growth 17Conversion 2Competition 80Returns 20Price range 95Avg price 95Brand share 39Review moat 90Quality gap 27
**Avg price**
**Incredible****$33.60**
avg listing price — sweet spot $15–$100
**Price range**
**Incredible****$19.74–$43.05**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Review moat**
**Great****209.52**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Great****35%**
top-5 click share — an open shelf
**Brand share**
**Okay****81%**
top-5 brand share — brands hold most of the demand
**Quality gap**
**Okay****4.6★**
avg incumbent rating — lower means beatable quality
**Returns**
**Bad****6.4%**
return rate — above 5% kills the launch gate
**Growth**
**Bad****-16.2%**
90-day search growth — must beat 0% to launch
**Conversion**
**Bad****0.2%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Bad****$5K**
$5K/yr · 75K searches
**Signals**[** High Returns**](https://flapen.com/research/niches?market=us&signal=high_returns "Return rate > 5%")
## **Is mothman onesie profitable on Amazon?**
According to Flapen's Amazon United States niche tracking, mothman onesie is a $5K/yr Amazon United States market (75K searches/yr). The top 5 brands hold 81% of demand. Demand peaks in Oct–Nov–Dec. Verdict: Skip it — 38/100.
Data updated Jul 21, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **mothman onesie market size & sales**
Units sold, revenue, conversion and listing quality across the tracked shelf.
- **Units sold / yr**
- **500–750**
- avg 0–100/product
- **Revenue / yr**
- **$17K–$25K**
- units × avg price
- **Conversion rate**
- **0.2%**
- **Avg BSR**
- **#44,833**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **86%**
- **Out of stock**
- **18.3%**
- **Avg brand age**
- **33 months**
- **Avg seller age**
- **195 days**
## **Competition: brands, sellers & click share**
Clicks spread well past the top 5 (35% combined) — an open shelf where new products get seen.
**Brands**
**13 **▲rising
**Sellers**
**16**
**Top-5 brand share**
**81%**
Top 20: 100%
**Top-5 click share**
**35%**
Top 20: 80%
**Open market**
**15%**
- YUTCOTC26% - MORNINGFLY19% - JUOLOET14% - NEWCOSPLAY13% - AMAMHAHAVA9% - KZLFSHI4% - Open — no brand owns it (7 brands, 15%)
## **mothman onesie demand & seasonality**
Weekly Amazon search volume, last 91 weeks — -16.2% search growth over the last 90 days.
8K6KSpike '24Prime Day '25Spike '25Holiday '25Spike '26 seasonNovDecJanFebMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun
Peak months: Oct, Nov, Dec · busiest ÷ quietest = 15.6×
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/mothman-onesie/trend)
## **Top mothman onesie search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **mothman onesie**33K/yr-16.3%0.5% conv. - **moth onesie**15K/yr-11.7%0.4% conv. - **moth onesie adult**11K/yr+3.5%0.3% conv. - **mothman onesie adult**8K/yr-24.6%0.2% conv. - **mothman pajamas**5K/yr-20.4%1.2% conv. - **mothman onesies adult**3K/yr-95.4%0.0% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/mothman-onesie/search-terms)
## **Top mothman onesie products & what they sell for**
Every tracked product — its share of the shelf, its review moat, and what it sells for.
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%4%$1818%$36112%$54216%$722101001K 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**MORNINGFLY Mothman Onesie Pajamas Mothman Costume Adult Halloween Onesie Christmas Cosplay Unisex Party Costume**MORNINGFLY**$40.51**4.7★277 rev](https://www.amazon.com/dp/B0CR2YJMGD) [2**YUTCOTC Mothman Costume Mothman Onesie Pajamas Halloween Cosplay Unisex Party Costume**YUTCOTC**$39.99**4.6★170 rev](https://www.amazon.com/dp/B0D89QQ3CT) [3**NEWCOSPLAY Unisex Adult White Mothman Onesie Pajamas Animal One Piece Halloween Costume Cosplay Sleepwear (White Mothman Medium)**NEWCOSPLAY**$34.01**4.5★138 rev](https://www.amazon.com/dp/B0FK579MHV) [4**YUTCOTC Mothman Costume Mothman Onesie Pajamas Halloween Cosplay Unisex Party Costume**YUTCOTC**$42.96**4.6★170 rev](https://www.amazon.com/dp/B0DCFLM8BK) [5**KZLFSHI Adult Onesie Pajamas Cosplay Halloween Costume Animals Sleepwear Jumpsuit Costume for Women Men (US Alpha X-Large Regular Regular black)**KZLFSHI**$33.72**4.4★64 rev](https://www.amazon.com/dp/B0FFY6C4YK)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**YUTCOTC Mothman Costume Mothman Onesie Pajamas Halloween Cosplay Unisex Party Costume**YUTCOTC**$43.05**170 rev3mo ago](https://www.amazon.com/dp/B0GVMNH293) [**MORNINGFLY Mothman Onesie Pajamas Mothman Costume Adult Halloween Onesie Christmas Cosplay Unisex Party Costume**MORNINGFLY**$39.80**277 rev3mo ago](https://www.amazon.com/dp/B0GVMMVCK3) [**JUOLOET Unisex Adult Onesie Pajamas Mothman Animal One Piece Snug Fit Halloween Costume Sleepwear HomewearBlack Mothman XX-Large**JUOLOET**$30.95**473 rev3mo ago](https://www.amazon.com/dp/B0GTTS294Q) [**JUOLOET Unisex Adult Mothman Onesie Pajamas Animal One Piece Snug Fit Halloween Costume Sleepwear HomewearGrey Mothman Small**JUOLOET**$25.87**473 rev11mo ago](https://www.amazon.com/dp/B0FK9KJZ1K) [**NEWCOSPLAY Unisex Adult White Mothman Onesie Pajamas Animal One Piece Halloween Costume Cosplay Sleepwear (White Mothman Medium)**NEWCOSPLAY**$34.01**138 rev11mo ago](https://www.amazon.com/dp/B0FK579MHV)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**MORNINGFLY Mothman Onesie Pajamas Mothman Costume Adult Halloween Onesie Christmas Cosplay Unisex Party Costume**MORNINGFLY**$39.80**4.7★**▲ 279%**](https://www.amazon.com/dp/B0GVMMVCK3) [**JUOLOET Unisex Adult Onesie Pajamas Mothman Animal One Piece Snug Fit Halloween Costume Sleepwear HomewearBlack Mothman XX-Large**JUOLOET**$30.95**4.6★**▲ 278%**](https://www.amazon.com/dp/B0GTTS294Q) [**YUTCOTC Mothman Costume Mothman Onesie Pajamas Halloween Cosplay Unisex Party Costume**YUTCOTC**$43.05**4.6★**▲ 277%**](https://www.amazon.com/dp/B0GVMNH293) [**AMAMHAHAVA Luna Moth Onesie Pajamas for Adults Luna Moth Halloween Cosplay Costume Christmas Cartoon One-Piece Cozy Sleepwear**AMAMHAHAVA**$40.12**4.5★**▲ 248%**](https://www.amazon.com/dp/B0F17JDPX8) [**JUOLOET Unisex Adult Mothman Onesie Pajamas Animal One Piece Snug Fit Halloween Costume Sleepwear HomewearRed Mothman Small**JUOLOET**$27.15**4.6★**▲ 204%**](https://www.amazon.com/dp/B0FJS5SB4Q)
**~~View all trending →~~**
## **What reviews say buyers love and hate about mothman onesie**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Warmth**14%
*“Very warm”*
**Size-Overall**14%
*“Fits perfectly”*
**Quality-Overall**12%
*“It was more high-quality than expected”*
**Comfort-Overall**12%
*“Comfortable”*
**Thickness**7%
*“Super thick and cozy”*
**Value For Money**7%
*“Worth every cent :-”*
**Gifting Purpose**5%
*“Fun gift for my daughter who loves it”*
**Soft Feel**5%
*“It's quite soft and adorable”*
**Storage Capacity**3%
*“IT HAS POCKETS”*
**Color**2%
*“If they made this in other colors”*
### **What buyers complain about **
**Size-Overall**21%
*“I would size down”*
**Quality-Overall**14%
*“Messed up product :”*
**Weight Heavy**10%
*“Hood is a little heavy”*
**Soft Feel**7%
*“Fabric definitely isn't the softest”*
**Ease Of Use**5%
*“it made it a bit difficult for me to walk in”*
**Durability**5%
*“Worn multiple times”*
### **Top return reasons **
**Size-Overall**44%
**Sleeve Fit**11%
**Arm Fit**9%
**Thigh Fit**8%
**Length**8%
**Advertised Vs Actual Product**4%
**Material Quality**4%
**Width**3%
**Weather Proof**2%
**Quality-Overall**2%
## **Common mothman onesie questions**
- **Is mothman onesie profitable to sell on Amazon United States?**
- The niche generates $5K/yr across 42 tracked products. 0 of 14 products launched in the last 360 days are still selling. 90-day search growth is -16.2%. Flapen's verdict: Skip it (38/100).
- **How competitive is the mothman onesie niche?**
- 13 brands and 16 sellers compete. The top 5 products take 35% of clicks and top 5 brands hold 81% of demand.
- **What do buyers complain about in mothman onesie?**
- Top complaints mined from reviews: Size-Overall, Quality-Overall, Weight Heavy. The return rate is 6.4% — above our launch gate.
- **When does demand for mothman onesie peak?**
- Demand peaks in Oct–Nov–Dec; the busiest month runs 15.6× the quietest.
- **What does it cost to enter the mothman onesie niche?**
- Listings span $19.74–$43.05; the average listing price is $33.60 (sweet spot $15–$100). The average incumbent carries 210 reviews — the moat a new listing must climb.
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