18 month clothes
Skip itSoft demand (-23.4% this quarter) — this niche doesn't clear our bar today.
Competition
Incredible18%top-5 click share — an open shelf
Brand share
Incredible38%top-5 brand share — no brand owns this niche
Avg price
Great$15.49avg listing price — sweet spot $15–$100
Returns
Good2.6%return rate — above 5% kills the launch gate
Price range
Good$6.94–$26.34cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Bad6,764.1avg incumbent reviews — the moat a new listing must climb
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Market size
Bad$66K$66K/yr · 341K searches
Conversion
Bad1.3%search→purchase rate — share of searches ending in a sale
Growth
Bad-23.4%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, 18 month clothes is a $66K/yr Amazon United States market (341K searches/yr). The top 5 brands hold 38% of demand. Demand peaks in Dec. Verdict: Skip it — 46/100.
Data updated Jul 8, 2026 · scored weekly · How we score niches
18 month clothes market data
- Units sold / yr
- 6K–8K
- avg 0–100/product
- Revenue / yr
- $93K–$124K
- units × avg price
- Conversion rate
- 1.3%
- Avg BSR
- #93
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 92%
- Out of stock
- 2.4%
- Avg brand age
- 33 months
- Avg seller age
- 158 days
Competition & brand share
Clicks spread well past the top 5 (18% combined) — an open shelf where new products get seen.Brands
57 falling
Sellers
62
Top-5 brand share
38%
Top 20: 77%
Top-5 click share
18%
Top 20: 42%
Open market
58%
- Simple Joys by Carter's10%
- Amazon Essentials9%
- Onesies Brand7%
- Mioglrie6%
- Voonlie6%
- Tiny Cutey4%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -23.4% search growth over the last 90 days.Peak months: Dec · busiest ÷ quietest = 2.4×
Top 18 month clothes search terms
- 12-18 month girl clothes summer34K/yr
- 18 months girl clothes summer32K/yr
- 18 month girl summer clothes18K/yr
- 24 months girls clothes summer17K/yr
- 18 month summer girl clothes19K/yr
- 18 month clothes28K/yr
- 1 year old clothes19K/yr
- baby girl summer clothes 12-18 months13K/yr
- 1 year old girl outfit15K/yr
- 18-24 months girl clothes11K/yr
Top 18 month clothes 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
Onesies Brand Baby Girls 3-Pack Romper Fox 18 Months
Onesies Brand$22.594.8★2,230 rev
Voonlie Toddler Baby Girl Summer Clothes Outfits Crocheted Ruffle Camisole Pants Kids Clothing Set (Apricot 18-24 Months)
Voonlie$14.684.7★159 rev
Tiny Cutey Baby Girl Clothes Infant Summer Outfits Set Ruffle Sleeve Romper and Floral Shorts with Headband (Sleeveless Purple 90 12_months)
Tiny Cutey$15.124.7★2,022 rev
Mioglrie Toddler Girl Summer Outfits 12 18 Months Baby Girl Clothes Rose Red Short Sleeve T-Shirt and Shorts Outfit with Cute Flower Clothing Set 12-18 Month
Mioglrie$9.974.6★187 rev
18-24 Months Girl Clothes Baby Girls Dress Infant Summer Outfits Toddler Casual Ruffle Sleeve Strawberry Red Sundress with Cute Red Bag
Mioglrie$10.014.7★1,282 rev
Newest
by launch date
Simple Joys by Carters Baby Girls 3-piece Playwear Set Denim/Pink Dots/White Floral 18 Months
Simple Joys by Carter's$17.6912,218 rev
Simple Joys by Carters Baby Girls 2- pack Short-Sleeve Dress Set Dress pink print/grey butterfly 18 Months
Simple Joys by Carter's$16.8121,332 rev
Simple Joys by Carters Baby 3-pack Snap-up Rompers navy dot/pink stripe/yellow dot 18 Months
Simple Joys by Carter's$20.9627,630 rev
Amazon Essentials x Sofia Grainge Baby Girls Cotton Short Sleeve Romper with Peter Pan Collar Pack of 2 Lemon/Uneven Stripe 18 Months
Amazon Essentials$16.74344 rev
Tsultryofs Toddler Baby Girl Summer Clothes Letter Graphic Print Short Sleeve T-Shirt Tops and Shorts 6 12 18 24M 2 3T Set (Tractor Apricot 12-18 Months)
Tsultryofs$14.1317 rev
Trending
90-day click momentum
Gureui Toddler Baby Girl Summer Clothes 12-18 Months Gingham Top Linen Pants 2 Piece Outfits
Gureui$14.944.6★
Tsultryofs Toddler Baby Girl Summer Clothes Letter Graphic Print Short Sleeve T-Shirt Tops and Shorts 6 12 18 24M 2 3T Set (Tractor Apricot 12-18 Months)
Tsultryofs$14.134.2★
Amazon Essentials x Sofia Grainge Baby Girls Cotton Short Sleeve Romper with Peter Pan Collar Pack of 2 Lemon/Uneven Stripe 18 Months
Amazon Essentials$16.744.8★
Voonlie Toddler Baby Girl Summer Clothes Outfits Crocheted Ruffle Camisole Pants Kids Clothing Set (Apricot 18-24 Months)
Voonlie$14.684.7★
Amazon Essentials Baby Girls Short Sleeve Bodysuit Dress Everyday Dresses Pack of 3 Pink/Apples 18 Months
Amazon Essentials$22.734.8★
What buyers say about 18 month clothes
What buyers praise and complain about, mined from review topics.What buyers love
“Fit is normal size”
“Good variety”
“So comfortable”
“So soft and buttery”
“Great value”
“Color is cute”
“Good material”
“Just as described”
“Easy”
“Super light and like that they are easy to put on”
What buyers complain about
“Bigger than expected”
“Cheaply made”
“material looks a little cheap”
“so the straps do slip a little”
“Inconvenient”
“The fabric is not at all a thick”
“Not soft enough to be considered as bare foot”
“Not worth it”
“Not durable”
“Chemical smell”
Top return reasons
Common questions
- Is 18 month clothes profitable to sell on Amazon United States?
- The niche generates $66K/yr across 145 tracked products. 27 of 62 products launched in the last 360 days are still selling. 90-day search growth is -23.4%. Flapen's verdict: Skip it (46/100).
- How competitive is the 18 month clothes niche?
- 57 brands and 62 sellers compete. The top 5 products take 18% of clicks and top 5 brands hold 38% of demand.
- What do buyers complain about in 18 month clothes?
- Top complaints mined from reviews: Size-Overall, Quality-Overall, Material Quality. The return rate is 2.6%.
- When does demand for 18 month clothes peak?
- Demand peaks in Dec; the busiest month runs 2.4× the quietest.
- What does it cost to enter the 18 month clothes niche?
- Listings span $6.94–$26.34; the average listing price is $15.49 (sweet spot $15–$100). The average incumbent carries 6,764 reviews — the moat a new listing must climb.