18 month boy shirts
Skip itA small market ($70K/yr) — this niche doesn't clear our bar today.
Competition
Incredible10%top-5 click share — an open shelf
Avg price
Great$18.49avg listing price — sweet spot $15–$100
Returns
Great2.0%return rate — above 5% kills the launch gate
Price range
Good$5.65–$39.86cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Good73%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
Bad6,921.31avg incumbent reviews — the moat a new listing must climb
Market size
Bad$70K$70K/yr · 263K searches
Conversion
Bad1.4%search→purchase rate — share of searches ending in a sale
Quality gap
Bad4.7★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
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.No pronounced peak months · busiest ÷ quietest = 1.3×
Top 18 month boy shirts search terms
- 18 month boy shirts25K/yr
- 18 month girl shirts17K/yr
- baby girls tops17K/yr
- newborn shirts16K/yr
- baby boy shirt16K/yr
- 12 month boy shirts16K/yr
- baby boy shirts 12-18 months18K/yr
- camisetas para bebe12K/yr
- 12 month girl shirts12K/yr
- baby shirts 0-3 months13K/yr
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.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Amazon Essentials Unisex Babies Short Sleeve T-Shirts Pack of 3 Oatmeal Heather/White/Stripe 18 Months
Amazon Essentials$14.584.8★491 rev
Amazon Essentials Unisex Babies Short Sleeve T-Shirts Pack of 3 Oatmeal Heather/White/Stripe 6-9 Months
Amazon Essentials$14.194.8★491 rev
Simple Joys by Carters Baby and Toddler Boys 3-Pack Solid Pocket Short-Sleeve Tee Shirts
Simple Joys by Carter's$14.764.8★24,631 rev
Amazon Essentials Unisex Babies Short Sleeve T-Shirts Pack of 3 Pastel Peach/Cheetah/Stripe 18 Months
Amazon Essentials$14.274.8★491 rev
Gerber Baby Girls 3-Pack Short-Sleeve Slip-on Shirts Infant and Toddler Hoodies White 6-9 Months US
Gerber$9.574.6★7,868 rev
Newest
by launch date
Simple Joys by Carters Baby and Toddler Boys 3-Pack Tank Tops
Simple Joys by Carter's$15.3210,403 rev
Amazon Essentials x Sofia Grainge Baby Girls Cotton Short Sleeve Blouses with Ruffles Pack of 2 Light Blue/Bouquets 18 Months
Amazon Essentials$16.71224 rev
Butterblu Taylor 5-Pack Short Sleeve T-Shirts 100% Organic Cotton for Boys & Girls Terra 18 Months
Butterblu$27.25220 rev
Jecson Baby Boy Summer Clothes Boys Henley Shirt 3-Pack Cotton Stretch Tops Lightweight Summer T Shirts
Jecson$14.7777 rev
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$23.52144 rev
Trending
90-day click momentumJecson Baby Boy Summer Clothes Boys Henley Shirt 3-Pack Cotton Stretch Tops Lightweight Summer T Shirts
Jecson$14.774.6★
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$23.524.9★
Amazon Essentials x Sofia Grainge Baby Girls Cotton Short Sleeve Blouses with Ruffles Pack of 2 Light Blue/Bouquets 18 Months
Amazon Essentials$16.714.8★
Gerber Baby 6-Pack Long-Sleeve Side-Snap Mitten-Cuff Shirt white Newborn
Gerber$17.474.5★
YERIOK 5 Pack Boys Shirts Short Sleeve Shirts for Boys Cotton T-Shirts Kids Toddler Tshirts Tees Clothes Summer Tops
YERIOK$25.064.7★
What buyers say about 18 month boy shirts
What buyers praise and complain about, mined from review topics.What buyers love
“Fit great”
“The shirts look good and good quality”
“Soft to touch”
“Good material”
“comfortable”
“Good Value”
“lots of colors”
“Christmas gift”
“They are very durable”
“received exactly what was advertised”
What buyers complain about
“Runs smaller then actual size guide says definitely size up”
“RUN SMALL / SHRINK TOO MUCH”
“$100 for 5 is out of budget”
“Poor make”
“it does not stretch a lot however”
“Neck hole too large”
“cloth is not good”
“it is thick”
“My toddler suffers from eczema”
“not as durable as I hoped”
Top return reasons
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.