---
title: "5th Birthday Shirt Boy — $146K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/5th-birthday-shirt-boy"
last_updated: "2026-08-09T09:26:39.625Z"
locale: en
meta:
description: "Niche score 46/100 · $146K/yr market · 431K searches/yr · $14.44 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 46/100 · $146K/yr market · 431K searches/yr · $14.44 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "5th Birthday Shirt Boy — $146K/yr Amazon US Niche (2026) - Flapen"
---
# **5th birthday shirt boy**
**Skip it**
Soft demand (-12.1% this quarter) — this niche doesn't clear our bar today.
Market size 32Growth 19Conversion 29Competition 96Returns 35Price range 38Avg price 70Brand share 64Review moat 80Quality gap 21
**Competition**
**Incredible****15%**
top-5 click share — an open shelf
**Review moat**
**Great****407.55**
avg incumbent reviews — the moat a new listing must climb
**Avg price**
**Good****$14.44**
avg listing price — sweet spot $15–$100
**Brand share**
**Good****66%**
top-5 brand share — brands hold most of the demand
**Price range**
**Okay****$6.83–$19.94**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Returns**
**Okay****4.2%**
return rate — above 5% kills the launch gate
**Market size**
**Okay****$146K**
$146K/yr · 431K searches
**Conversion**
**Okay****2.3%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Growth**
**Bad****-12.1%**
90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, 5th birthday shirt boy is a $146K/yr Amazon United States market (431K searches/yr). The top 5 brands hold 66% of demand. Demand peaks in Mar. Verdict: Skip it — 46/100.
Data updated Jul 8, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **5th birthday shirt boy market data**
- **Units sold / yr**
- **10K–13K**
- avg 0–100/product
- **Revenue / yr**
- **$144K–$181K**
- units × avg price
- **Conversion rate**
- **2.3%**
- **Avg BSR**
- **#4,059**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **92%**
- **Out of stock**
- **1.4%**
- **Avg brand age**
- **24 months**
- **Avg seller age**
- **181 days**
## **Competition & brand share**
Clicks spread well past the top 5 (15% combined) — an open shelf where new products get seen.
**Brands**
**48 **▼falling
**Sellers**
**47**
**Top-5 brand share**
**66%**
Top 20: 92%
**Top-5 click share**
**15%**
Top 20: 42%
**Open market**
**30%**
- Unordinary Toddler32% - GLIGLITTR12% - ZOELNIC10% - AG AGUU7% - Tstars6% - HELLO MEOW3%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -12.1% search growth over the last 90 days.
13K8KSpike '24Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Mar · busiest ÷ quietest = 2.1×
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/5th-birthday-shirt-boy/trend)
## **Top 5th birthday shirt boy search terms**
- **5th birthday shirt boy**72K/yr-11.7%1.4% conv. - **6th birthday shirt boy**62K/yr-21.5%1.1% conv. - **7th birthday shirt boy**50K/yr-1.2%1.3% conv. - **4th birthday shirt boy**55K/yr-9.9%0.9% conv. - **birthday boy shirt 7**24K/yr+1.3%1.8% conv. - **2nd birthday shirt boy**32K/yr-30.3%0.7% conv. - **birthday boy shirt 8**19K/yr-11.8%0.6% conv. - **5 year old boy birthday shirt**11K/yr+10.4%1.2% conv. - **4 year old boy birthday shirt**12K/yr+8.1%1.1% conv. - **6 year old boy birthday shirt**10K/yr+2.4%1.5% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/5th-birthday-shirt-boy/search-terms)
## **Top 5th birthday shirt boy 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%1%$1K2%$3K3%$4K4%$6K101001K10K 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**Unordinary Toddler Boys 6th Birthday Shirt (Charcoal Blue 7 Years)**Unordinary Toddler**$12.76**4.8★1,813 rev](https://www.amazon.com/dp/B089B39SJJ) [2**Birthday boy Shirt Toddler Boys Outfit First Happy 2t 3t 4 Year Old 5 Kids 6th (Charcoal Black 12 Months)**Unordinary Toddler**$12.69**4.8★4,726 rev](https://www.amazon.com/dp/B08G1BW7B8) [3**Unordinary Toddler 5th Birthday Shirt Boys 5 Year Old Birthday boy Five Shirt Gifts Fifth Years (US Age 6 Years Charcoal Blue)**Unordinary Toddler**$12.81**4.8★3,405 rev](https://www.amazon.com/dp/B07XX5GXMK) [4**5th Birthday Shirt Toddler Boy 5 Year Old Birthday T-Shirt Short Sleeve 2-Sided Print Tee Tops Outfit (Teal Blue 5T)**ZOELNIC**$14.05**4.4★74 rev](https://www.amazon.com/dp/B0G7FTXXQG) [5**Birthday boy Shirt Toddler Construction Shirts Boys 2t 3t 4 Year Old Excavator Theme Party t-Shirt 5 Kids 6th Outdoor Play (US Age 7 Years French Blue - 6th)**Unordinary Toddler**$13.03**4.9★43 rev](https://www.amazon.com/dp/B0GPF44LJT)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**5th Birthday Shirt Toddler Boy 5 Year Old Birthday T-Shirt Short Sleeve 2-Sided Print Tee Tops Outfit (Jet Black 5T)**ZOELNIC**$13.84**74 rev3mo ago](https://www.amazon.com/dp/B0GS54VZWJ) [**Birthday boy Shirt Toddler Construction Shirts Boys 2t 3t 4 Year Old Excavator Theme Party t-Shirt 5 Kids 6th Outdoor Play (US Age 7 Years French Blue - 6th)**Unordinary Toddler**$13.03**43 rev4mo ago](https://www.amazon.com/dp/B0GPF44LJT) [**Birthday boy Shirt Toddler Construction Shirts Boys 2t 3t 4 Year Old Excavator Theme Party t-Shirt 5 Kids 6th Outdoor Play (US Age 5 Years French Blue - 4th)**Unordinary Toddler**$13.02**43 rev4mo ago](https://www.amazon.com/dp/B0GPDCT7MV) [**Birthday boy Shirt Toddler Construction Shirts Boys 2t 3t 4 Year Old Excavator Theme Party t-Shirt 5 Kids 6th Outdoor Play (US Age 6 Years French Blue - 5th)**Unordinary Toddler**$13.33**43 rev4mo ago](https://www.amazon.com/dp/B0GPD3XCFG) [**GLIGLITTR Birthday Boy Shirt Birthday Dude Tshirt 2nd 3rd 4th 5th 6th 7th 8th Toddler Boys Bday Party Short Sleeve Outfit Top(Apricot 2-3T)**GLIGLITTR**$14.99**39 rev5mo ago](https://www.amazon.com/dp/B0GLP5DXWX)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Birthday boy Shirt Toddler Construction Shirts Boys 2t 3t 4 Year Old Excavator Theme Party t-Shirt 5 Kids 6th Outdoor Play (US Age 6 Years French Blue - 5th)**Unordinary Toddler**$13.33**4.9★**▲ 48%**](https://www.amazon.com/dp/B0GPD3XCFG) [**Birthday boy Shirt Toddler Boys Outfit First Happy 12m 2t 3t 4 Year Old 5 Kids 6th Number Printed T-Shirt (US Age 7 Years Charcoal Black - 6th)**Unordinary Toddler**$14.05**4.8★**▲ 47%**](https://www.amazon.com/dp/B0GKY8Q47R) [**Birthday boy Shirt Toddler Boys Outfit First Happy 12m 2t 3t 4 Year Old 5 Kids 6th Number Printed T-Shirt (US Age 5 Years Charcoal Black - 4th)**Unordinary Toddler**$14.53**4.8★**▲ 47%**](https://www.amazon.com/dp/B0GKY574G2) [**Birthday boy Shirt Toddler Construction Shirts Boys 2t 3t 4 Year Old Excavator Theme Party t-Shirt 5 Kids 6th Outdoor Play (US Age 7 Years French Blue - 6th)**Unordinary Toddler**$13.03**4.9★**▲ 47%**](https://www.amazon.com/dp/B0GPF44LJT) [**Birthday boy Shirt Toddler Construction Shirts Boys 2t 3t 4 Year Old Excavator Theme Party t-Shirt 5 Kids 6th Outdoor Play (US Age 5 Years French Blue - 4th)**Unordinary Toddler**$13.02**4.9★**▲ 47%**](https://www.amazon.com/dp/B0GPDCT7MV)
**~~View all trending →~~**
## **What buyers say about 5th birthday shirt boy**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**28%
*“not too tight”*
**Quality-Overall**18%
*“This is really high quality shirt”*
**Soft Feel**7%
*“Its soft”*
**Color**6%
*“Great Green Color”*
**Material Quality**5%
*“Good material”*
**Advertised Vs Actual Product**5%
*“As advertised”*
**Value For Money**5%
*“Good for the price”*
**Comfort-Overall**4%
*“It's comfortable”*
**Design-Overall**3%
*“The design is cute”*
**Print Quality**3%
*“Very cute printing”*
### **What buyers complain about **
**Size-Overall**30%
*“size down”*
**Quality-Overall**5%
*“Cheap”*
**Material Quality**5%
*“material is cheap”*
**Print Quality**5%
*“The prints are dull and small”*
**Value For Money**4%
*“not worth the hives”*
**Thickness**4%
*“Material was thick”*
**Product Condition**2%
*“looked very used”*
**Neck Fit**2%
*“the neck size is a little bit wider”*
**Advertised Vs Actual Product**2%
*“the picture is faded”*
**Allergies**1%
*“This outfit gave my son an allergic reaction”*
### **Top return reasons **
**Size-Overall**63%
**Length**12%
**Material Quality**4%
**Chest Fit**4%
**Color**2%
**Value For Money**2%
**Advertised Vs Actual Product**2%
**Sleeve Fit**2%
**Quality-Overall**1%
**Print Quality**1%
## **Common questions**
- **Is 5th birthday shirt boy profitable to sell on Amazon United States?**
- The niche generates $146K/yr across 165 tracked products. 9 of 58 products launched in the last 360 days are still selling. 90-day search growth is -12.1%. Flapen's verdict: Skip it (46/100).
- **How competitive is the 5th birthday shirt boy niche?**
- 48 brands and 47 sellers compete. The top 5 products take 15% of clicks and top 5 brands hold 66% of demand.
- **What do buyers complain about in 5th birthday shirt boy?**
- Top complaints mined from reviews: Size-Overall, Quality-Overall, Material Quality. The return rate is 4.2%.
- **When does demand for 5th birthday shirt boy peak?**
- Demand peaks in Mar; the busiest month runs 2.1× the quietest.
- **What does it cost to enter the 5th birthday shirt boy niche?**
- Listings span $6.83–$19.94; the average listing price is $14.44 (sweet spot $15–$100). The average incumbent carries 408 reviews — the moat a new listing must climb.
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