---
title: "18 Month Boy Shirts — $70K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/18-month-boy-shirts"
last_updated: "2026-08-08T01:07:06.032Z"
locale: en
meta:
description: "Niche score 47/100 · $70K/yr market · 263K searches/yr · $18.49 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 47/100 · $70K/yr market · 263K searches/yr · $18.49 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "18 Month Boy Shirts — $70K/yr Amazon US Niche (2026) - Flapen"
---
# **18 month boy shirts**
**Skip it**
A small market ($70K/yr) — this niche doesn't clear our bar today.
Market size 18Growth 28Conversion 18Competition 98Returns 75Price range 73Avg price 84Brand share 53Review moat 23Quality gap 18
**Competition**
**Incredible****10%**
top-5 click share — an open shelf
**Avg price**
**Great****$18.49**
avg listing price — sweet spot $15–$100
**Returns**
**Great****2.0%**
return rate — above 5% kills the launch gate
**Price range**
**Good****$5.65–$39.86**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Good****73%**
top-5 brand share — brands hold most of the demand
**Growth**
**Okay****+2.1%**
90-day search growth — must beat 0% to launch
**Review moat**
**Bad****6,921.31**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Bad****$70K**
$70K/yr · 263K searches
**Conversion**
**Bad****1.4%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
According to Flapen's Amazon United States niche tracking, 18 month boy shirts is a $70K/yr Amazon United States market (263K searches/yr). The top 5 brands hold 73% of demand. Verdict: Skip it — 47/100.
Data updated Jul 8, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **18 month boy shirts market data**
- **Units sold / yr**
- **4K–5K**
- avg 0–100/product
- **Revenue / yr**
- **$74K–$92K**
- units × avg price
- **Conversion rate**
- **1.4%**
- **Avg BSR**
- **#84**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **81%**
- **Out of stock**
- **10.1%**
- **Avg brand age**
- **36 months**
- **Avg seller age**
- **166 days**
## **Competition & brand share**
Clicks spread well past the top 5 (10% combined) — an open shelf where new products get seen.
**Brands**
**40 **▲rising
**Sellers**
**47**
**Top-5 brand share**
**73%**
Top 20: 94%
**Top-5 click share**
**10%**
Top 20: 26%
**Open market**
**28%**
- Amazon Essentials27% - Gerber13% - Simple Joys by Carter's10% - Garanimals9% - The Children's Place9% - Cudlie3%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +2.1% search growth over the last 90 days.
5K3KPrime Day '24Spike '25Prime Day '25Black Friday '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.3×
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/18-month-boy-shirts/trend)
## **Top 18 month boy shirts search terms**
- **18 month boy shirts**25K/yr+1.7%1.9% conv. - **18 month girl shirts**17K/yr+7.5%2.0% conv. - **baby girls tops**17K/yr-19.5%0.3% conv. - **newborn shirts**16K/yr+8.4%1.5% conv. - **baby boy shirt**16K/yr+3.0%0.3% conv. - **12 month boy shirts**16K/yr+1.3%1.8% conv. - **baby boy shirts 12-18 months**18K/yr-11.8%0.9% conv. - **camisetas para bebe**12K/yr+20.1%0.0% conv. - **12 month girl shirts**12K/yr+9.2%1.5% conv. - **baby shirts 0-3 months**13K/yr-6.9%0.8% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/18-month-boy-shirts/search-terms)
## **Top 18 month boy shirts 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%$7012%$1K3%$2K4%$3K101001K10K100K 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**Amazon Essentials Unisex Babies Short Sleeve T-Shirts Pack of 3 Oatmeal Heather/White/Stripe 18 Months**Amazon Essentials**$14.58**4.8★491 rev](https://www.amazon.com/dp/B0DNJSVL29) [2**Amazon Essentials Unisex Babies Short Sleeve T-Shirts Pack of 3 Oatmeal Heather/White/Stripe 6-9 Months**Amazon Essentials**$14.19**4.8★491 rev](https://www.amazon.com/dp/B0DNJTZRGS) [3**Simple Joys by Carters Baby and Toddler Boys 3-Pack Solid Pocket Short-Sleeve Tee Shirts**Simple Joys by Carter's**$14.76**4.8★24,631 rev](https://www.amazon.com/dp/B09M8YGQDM) [4**Amazon Essentials Unisex Babies Short Sleeve T-Shirts Pack of 3 Pastel Peach/Cheetah/Stripe 18 Months**Amazon Essentials**$14.27**4.8★491 rev](https://www.amazon.com/dp/B0DNJV8FWZ) [5**Gerber Baby Girls 3-Pack Short-Sleeve Slip-on Shirts Infant and Toddler Hoodies White 6-9 Months US**Gerber**$9.57**4.6★7,868 rev](https://www.amazon.com/dp/B007C2PWZM)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Simple Joys by Carters Baby and Toddler Boys 3-Pack Tank Tops**Simple Joys by Carter's**$15.32**10,403 rev2mo ago](https://www.amazon.com/dp/B07ZPQBRDD) [**Amazon Essentials x Sofia Grainge Baby Girls Cotton Short Sleeve Blouses with Ruffles Pack of 2 Light Blue/Bouquets 18 Months**Amazon Essentials**$16.71**224 rev2mo ago](https://www.amazon.com/dp/B0FTZ711YH) [**Butterblu Taylor 5-Pack Short Sleeve T-Shirts 100% Organic Cotton for Boys & Girls Terra 18 Months**Butterblu**$27.25**220 rev3mo ago](https://www.amazon.com/dp/B0FQRK3DP4) [**Jecson Baby Boy Summer Clothes Boys Henley Shirt 3-Pack Cotton Stretch Tops Lightweight Summer T Shirts**Jecson**$14.77**77 rev4mo ago](https://www.amazon.com/dp/B0GH7JZMGV) [**Garanimals Baby Girl Flower T-Shirt - Short Sleeve Tees - Kids Casual Crew Neck - Size 6-9 Months - Yellow Pink Light Blue - 4 Pack Set**Garanimals**$23.52**144 rev7mo ago](https://www.amazon.com/dp/B0G452V4WK)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Jecson Baby Boy Summer Clothes Boys Henley Shirt 3-Pack Cotton Stretch Tops Lightweight Summer T Shirts**Jecson**$14.77**4.6★**▲ 43%**](https://www.amazon.com/dp/B0GH7JZMGV) [**Garanimals Baby Girl Flower T-Shirt - Short Sleeve Tees - Kids Casual Crew Neck - Size 6-9 Months - Yellow Pink Light Blue - 4 Pack Set**Garanimals**$23.52**4.9★**▲ 41%**](https://www.amazon.com/dp/B0G452V4WK) [**Amazon Essentials x Sofia Grainge Baby Girls Cotton Short Sleeve Blouses with Ruffles Pack of 2 Light Blue/Bouquets 18 Months**Amazon Essentials**$16.71**4.8★**▲ 41%**](https://www.amazon.com/dp/B0FTZ711YH) [**Gerber Baby 6-Pack Long-Sleeve Side-Snap Mitten-Cuff Shirt white Newborn**Gerber**$17.47**4.5★**▲ 38%**](https://www.amazon.com/dp/B07GG949PB) [**YERIOK 5 Pack Boys Shirts Short Sleeve Shirts for Boys Cotton T-Shirts Kids Toddler Tshirts Tees Clothes Summer Tops**YERIOK**$25.06**4.7★**▲ 37%**](https://www.amazon.com/dp/B0CYP8P6H3)
**~~View all trending →~~**
## **What buyers say about 18 month boy shirts**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**21%
*“Fit great”*
**Quality-Overall**19%
*“The shirts look good and good quality”*
**Soft Feel**11%
*“Soft to touch”*
**Material Quality**7%
*“Good material”*
**Comfort-Overall**6%
*“comfortable”*
**Value For Money**5%
*“Good Value”*
**Color**3%
*“lots of colors”*
**Gifting Purpose**2%
*“Christmas gift”*
**Durability**2%
*“They are very durable”*
**Advertised Vs Actual Product**1%
*“received exactly what was advertised”*
### **What buyers complain about **
**Size-Overall**28%
*“Runs smaller then actual size guide says definitely size up”*
**Shrinkage Resistance**5%
*“RUN SMALL / SHRINK TOO MUCH”*
**Value For Money**4%
*“$100 for 5 is out of budget”*
**Quality-Overall**4%
*“Poor make”*
**Stretchability/Expandability/Elasticity**3%
*“it does not stretch a lot however”*
**Neck Fit**2%
*“Neck hole too large”*
**Material Quality**2%
*“cloth is not good”*
**Thickness**2%
*“it is thick”*
**Allergies**1%
*“My toddler suffers from eczema”*
**Durability**1%
*“not as durable as I hoped”*
### **Top return reasons **
**Size-Overall**66%
**Length**9%
**Material Quality**4%
**Sleeve Fit**3%
**Advertised Vs Actual Product**2%
**Value For Money**2%
**Color**2%
**Quality-Overall**1%
**Chest Fit**1%
**Thin**1%
## **Common questions**
- **Is 18 month boy shirts profitable to sell on Amazon United States?**
- The niche generates $70K/yr across 247 tracked products. 25 of 97 products launched in the last 360 days are still selling. 90-day search growth is +2.1%. Flapen's verdict: Skip it (47/100).
- **How competitive is the 18 month boy shirts niche?**
- 40 brands and 47 sellers compete. The top 5 products take 10% of clicks and top 5 brands hold 73% of demand.
- **What do buyers complain about in 18 month boy shirts?**
- Top complaints mined from reviews: Size-Overall, Shrinkage Resistance, Value For Money. The return rate is 2.0%.
- **When does demand for 18 month boy shirts peak?**
- Demand is steady year-round — the busiest month runs 1.3× the quietest.
- **What does it cost to enter the 18 month boy shirts niche?**
- Listings span $5.65–$39.86; the average listing price is $18.49 (sweet spot $15–$100). The average incumbent carries 6,921 reviews — the moat a new listing must climb.
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