---
title: "Shark Costume Kids — $81K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/shark-costume-kids"
last_updated: "2026-08-10T19:50:17.067Z"
locale: en
meta:
description: "Niche score 45/100 · $81K/yr market · 278K searches/yr · $27.03 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 45/100 · $81K/yr market · 278K searches/yr · $27.03 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Shark Costume Kids — $81K/yr Amazon US Niche (2026) - Flapen"
---
# **shark costume kids**
**Skip it**
High returns (10.2%) — this niche doesn't clear our bar today.
Market size 20Growth 21Conversion 14Competition 63Returns 7Price range 95Avg price 95Brand share 76Review moat 67Quality gap 68
**Avg price**
**Incredible****$27.03**
avg listing price — sweet spot $15–$100
**Price range**
**Incredible****$17.47–$39.99**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Great****59%**
top-5 brand share — no brand owns this niche
**Quality gap**
**Good****4.3★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Good****818.89**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Good****47%**
top-5 click share — leaders hold, buyers still browse
**Growth**
**Bad****-8.8%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****$81K**
$81K/yr · 278K searches
**Conversion**
**Bad****1.1%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Bad****10.2%**
return rate — above 5% kills the launch gate
**Signals**[** High Returns**](https://flapen.com/research/niches?market=us&signal=high_returns "Return rate > 5%")
According to Flapen's Amazon United States niche tracking, shark costume kids is a $81K/yr Amazon United States market (278K searches/yr). The top 5 brands hold 59% of demand. Demand peaks in Sep–Oct. Verdict: Skip it — 45/100.
Data updated Jul 10, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **shark costume kids market data**
- **Units sold / yr**
- **4K–5K**
- avg 0–100/product
- **Revenue / yr**
- **$108K–$135K**
- units × avg price
- **Conversion rate**
- **1.1%**
- **Avg BSR**
- **#1,554**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **95%**
- **Out of stock**
- **14.9%**
- **Avg brand age**
- **40 months**
- **Avg seller age**
- **190 days**
## **Competition & brand share**
The top 5 products take 47% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**26 **▼falling
**Sellers**
**45**
**Top-5 brand share**
**59%**
Top 20: 94%
**Top-5 click share**
**47%**
Top 20: 81%
**Open market**
**36%**
- inkArts29% - Touchat11% - TBGENIUS7% - HSCTEK7% - Newleafly5% - JCJ5%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -8.8% search growth over the last 90 days.
40K30KSpike '24Spike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Sep, Oct · busiest ÷ quietest = 45.3×
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/shark-costume-kids/trend)
## **Top shark costume kids search terms**
- **shark costume kids**150K/yr-14.0%1.1% conv. - **kids shark costume**49K/yr-8.0%1.6% conv. - **shark costume for kids**12K/yr+26.8%1.2% conv. - **disfraz de tiburon nio**5K/yr+15.1%0.4% conv. - **shark custom kids**5K/yr-18.1%0.4% conv. - **shark kids costume**8K/yr-6.4%1.6% conv. - **kid shark costume**7K/yr+43.7%1.6% conv. - **boys shark costume**10K/yr-28.0%0.3% conv. - **shark costume kids 10-12**6K/yr+15.2%0.3% conv. - **shark costumes for kids**5K/yr-22.6%1.1% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/shark-costume-kids/search-terms)
## **Top shark costume kids 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%4%$3K8%$6K12%$10K16%$13K1101001K10K 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**Shark Blanket Kids Shark Onesie for Kid Shark Costume Pajamas Kids Shark Blankets Hoodie Onesies**inkArts**$20.49**4.3★904 rev](https://www.amazon.com/dp/B0CLJ69TZC) [2**Touchat Shark Blanket for Adult & Kids Super Soft Cozy Flannel Throw Wearable Blanket Cartoon Animals Shark Onesie Hoodie Sleeping Bag Cosplay Shark Costume Blanket Gifts for Shark Lovers (Blue M)**Touchat**$18.12**4.5★1,252 rev](https://www.amazon.com/dp/B0CC98BTQJ) [3**inkArts Shark Blanket Hoodie - Adult Shark Sleeping Bag & Cozy Flannel Hoodie**inkArts**$20.13**4.2★4,873 rev](https://www.amazon.com/dp/B0CH9TWC91) [4**TBGENIUS Shark Blanket Hoodie Onesie for Adults and Kids Cozy Flannel Shark Costume Shark Sleeping Bag**TBGENIUS**$17.74**4.0★213 rev](https://www.amazon.com/dp/B0FPVQMTT2) [5**HSCTEK Shark Onesie Costume Kids Baby Pajamas Cosplay Sleepwear Clothes 16**HSCTEK**$29.17**4.6★270 rev](https://www.amazon.com/dp/B0DB1WDGQC)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**XYJKIDSES Inflatable Shark Costume for Kids Funny Halloween Blow Up Costumes for Boys Girls Cosplay Party Suit (Blue Shark)**XYJKIDSES**$36.72**23 rev3mo ago](https://www.amazon.com/dp/B0GSJ6XNS1) [**TBGENIUS Shark Blanket Hoodie Onesie for Adults and Kids Cozy Flannel Shark Costume Shark Sleeping Bag**TBGENIUS**$17.74**213 rev10mo ago](https://www.amazon.com/dp/B0FPVQMTT2) [**Morph Shark Costume Kids Halloween Costume Boys and Girls Small**Morph**$37.26**115 rev1y ago](https://www.amazon.com/dp/B0DTKGRCVG) [**Newleafly Unisex Kids Shark Onesie Pajamas Soft Cozy Animal Onesie Halloween Cosplay Costume**Newleafly**$24.03**15 rev1y ago](https://www.amazon.com/dp/B0F99KGL7T) [**Newleafly Unisex Kids Shark Onesie Pajamas Soft Cozy Animal Onesie Halloween Cosplay Costume**Newleafly**$24.64**15 rev1y ago](https://www.amazon.com/dp/B0F99J9VL3)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**XYJKIDSES Inflatable Shark Costume for Kids Funny Halloween Blow Up Costumes for Boys Girls Cosplay Party Suit (Blue Shark)**XYJKIDSES**$36.72**4.9★**▲ 471%**](https://www.amazon.com/dp/B0GSJ6XNS1) [**haikyuu Kid Shark Costume Grey Pink Yellow Blue Fish Hoodie Boy Girl Halloween Birthday Party Dress Up (blue Small)**haikyuu**$21.60**3.6★**▲ 464%**](https://www.amazon.com/dp/B0G6FFR4PM) [**HSCTEK Shark Onesie Costume Kids Baby Pajamas Cosplay Sleepwear Clothes 16**HSCTEK**$29.17**4.6★**▲ 442%**](https://www.amazon.com/dp/B0DB1WDGQC) [**Shark Blanket Hoodie Kid Wearable Shark Blanket Shark Sleeping Bag Soft Cozy Warm Flannel Hoodie Sharks Blankets Onesie Kids(XS)**inkArts**$27.82**4.2★**▲ 432%**](https://www.amazon.com/dp/B0CKWVS7BG) [**Newleafly Unisex Kids Shark Onesie Pajamas Soft Cozy Animal Onesie Halloween Cosplay Costume**Newleafly**$24.03**4.1★**▲ 398%**](https://www.amazon.com/dp/B0F99KGL7T)
**~~View all trending →~~**
## **What buyers say about shark costume kids**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Soft Feel**15%
*“The material itself is soft and cozy, and the design is really cute”*
**Gifting Purpose**12%
*“Great gift”*
**Comfort-Overall**12%
*“comfortable”*
**Size-Overall**11%
*“Fit great”*
**Warmth**8%
*“Cozy and warm”*
**Quality-Overall**7%
*“Good quality”*
**Fun/Entertainment Experience**5%
*“It's fun for the whole family”*
**Value For Money**4%
*“the sale price was right”*
**Material Quality**2%
*“Nice material”*
**Advertised Vs Actual Product**2%
*“As described”*
### **What buyers complain about **
**Size-Overall**32%
*“Poor fit”*
**Durability**10%
*“it kept tearing”*
**Quality-Overall**10%
*“not well made”*
**Gap/Hole**7%
*“there's two holes in it”*
**Stitch/Finish/Polish**6%
*“Weak seams”*
**Advertised Vs Actual Product**2%
*“Product description was way off”*
**Thickness**2%
*“Its thin and cheap”*
**Material Quality**2%
*“The material was very cheap”*
**Machine Wash Suitability**1%
*“Do not wash with other pieces of clothing”*
**Smell**1%
### **Top return reasons **
**Size-Overall**59%
**Length**13%
**Gap/Hole**5%
**Stitch/Finish/Polish**3%
**Advertised Vs Actual Product**3%
**Material Quality**3%
**Arm Fit**2%
**Sleeve Fit**1%
**Shoulder Fit**1%
**Product Condition**1%
## **Common questions**
- **Is shark costume kids profitable to sell on Amazon United States?**
- The niche generates $81K/yr across 38 tracked products. 1 of 3 products launched in the last 360 days are still selling. 90-day search growth is -8.8%. Flapen's verdict: Skip it (45/100).
- **How competitive is the shark costume kids niche?**
- 26 brands and 45 sellers compete. The top 5 products take 47% of clicks and top 5 brands hold 59% of demand.
- **What do buyers complain about in shark costume kids?**
- Top complaints mined from reviews: Size-Overall, Durability, Quality-Overall. The return rate is 10.2% — above our launch gate.
- **When does demand for shark costume kids peak?**
- Demand peaks in Sep–Oct; the busiest month runs 45.3× the quietest.
- **What does it cost to enter the shark costume kids niche?**
- Listings span $17.47–$39.99; the average listing price is $27.03 (sweet spot $15–$100). The average incumbent carries 819 reviews — the moat a new listing must climb.
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