baby onesies 6-9 months boy
Skip itA deep review moat (23,401 avg reviews) — this niche doesn't clear our bar today.
Avg price
Great$20.16avg listing price — sweet spot $15–$100
Competition
Great34%top-5 click share — an open shelf
Price range
Good$2.45–$45.21cheapest to priciest tracked listing — scored on the share inside $15–$100
Returns
Good2.2%return rate — above 5% kills the launch gate
Market size
Good$471K$471K/yr · 1.9M searches
Brand share
Okay83%top-5 brand share — brands hold most of the demand
Growth
Bad-10.6%90-day search growth — must beat 0% to launch
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Conversion
Bad1.2%search→purchase rate — share of searches ending in a sale
Review moat
Bad23,400.56avg incumbent reviews — the moat a new listing must climb
According to Flapen's Amazon United States niche tracking, baby onesies 6-9 months boy is a $471K/yr Amazon United States market (1.9M searches/yr). The top 5 brands hold 83% of demand. Demand peaks in Oct–Nov. Verdict: Skip it — 46/100.
Data updated Jul 8, 2026 · scored weekly · How we score niches
baby onesies 6-9 months boy market data
- Units sold / yr
- 20K–25K
- avg 250–500/product
- Revenue / yr
- $403K–$504K
- units × avg price
- Conversion rate
- 1.2%
- Avg BSR
- #1,680
- Page quality
- 0%
- Prime
- 98%
- Sponsored
- 98%
- Out of stock
- 0.8%
- Avg brand age
- 40 months
- Avg seller age
- 151 days
Competition & brand share
Clicks spread well past the top 5 (34% combined) — an open shelf where new products get seen.Brands
19 rising
Sellers
30
Top-5 brand share
83%
Top 20: 100%
Top-5 click share
34%
Top 20: 65%
Open market
13%
- Gerber61%
- Amazon Essentials8%
- Yoofoss6%
- Simple Joys by Carter's4%
- Touchat4%
- Onesies Brand4%
- Open — no brand owns it (13 brands, 13%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -10.6% search growth over the last 90 days.Peak months: Oct, Nov · busiest ÷ quietest = 9.6×
Top baby onesies 6-9 months boy search terms
- onesie867K/yr
- white onesies136K/yr
- onesies 12 months71K/yr
- white onesies 0-3 months65K/yr
- onesies 12 months+76K/yr
- short sleeve onesies boy61K/yr
- double zipper onesies64K/yr
- onsie126K/yr
- white baby onesies62K/yr
- 6-9 month onesies55K/yr
Top baby onesies 6-9 months 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.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Gerber Baby 8-Pack Short Sleeve Onesies Bodysuits Solid White Newborn
Gerber$16.814.8★56,105 rev
Gerber Baby 5-Pack Solid Onesies Bodysuits White 3-6 Months
Gerber$13.074.8★58,053 rev
Gerber Baby Girls 15 Piece Onesies Bodysuit Multi Size Pack Shirt White 0-3M 3-6M 6-9M US
Gerber$35.354.8★6,640 rev
Gerber Baby 5-Pack Solid Onesies Bodysuits White 0-3 Months
Gerber$13.064.8★58,053 rev
Gerber Baby 5-Pack Solid Onesies Bodysuits White 6-9 Months
Gerber$13.084.8★58,053 rev
Newest
by launch date
AOLBSPD Big Mouth Monster Onesie Silly Monster Onesie Plush Cosplay Onesie Pajamas Cozy Home Soft Plush Costume(No Shoes Included)-L Green
AOLBSPD$40.0544 rev
Yoofoss Baby Bodysuits 100% Organic Cotton Baby Short Sleeve Baby Boys Girls Clothes Soft Newborn Infant Romper 5 Pack 0-3 Months
Yoofoss$9.8942 rev
Amazon Essentials Unisex Toddlers Baby Unisex 6-Pack Sleeveless Bodysuits White 18 Months
Amazon Essentials$16.355,139 rev
Amazon Essentials Unisex Toddlers Baby Unisex 6-Pack Sleeveless Bodysuits White 0-3 Months
Amazon Essentials$16.335,139 rev
Amazon Essentials Unisex Toddlers Baby Unisex 6-Pack Sleeveless Bodysuits White 24 Months
Amazon Essentials$16.815,139 rev
Trending
90-day click momentumAOLBSPD Big Mouth Monster Onesie Silly Monster Onesie Plush Cosplay Onesie Pajamas Cozy Home Soft Plush Costume(No Shoes Included)-L Green
AOLBSPD$40.054.2★
Yoofoss Baby Bodysuits 100% Organic Cotton Baby Short Sleeve Baby Boys Girls Clothes Soft Newborn Infant Romper 5 Pack 0-3 Months
Yoofoss$9.893.9★
Amazon Essentials Unisex Toddlers Baby Unisex 6-Pack Sleeveless Bodysuits Pink/Floral 12 Months
Amazon Essentials$12.214.8★
Amazon Essentials Unisex Toddlers Baby Unisex 6-Pack Sleeveless Bodysuits White 0-3 Months
Amazon Essentials$16.334.8★
Gerber Baby 8-Pack Short Sleeve Onesies Bodysuits Southwest 6-9 Months
Gerber$25.324.8★
What buyers say about baby onesies 6-9 months boy
What buyers praise and complain about, mined from review topics.What buyers love
“The material is soft”
“Fit great”
“Excellent product”
“Nice and comfortable”
“Good value for money”
“Nice soft material”
“Christmas gift”
“Cute and warm”
“The colors are bright”
“Easy to use”
What buyers complain about
“much shorter”
“Size is very misleading”
“Cheap quality”
“Not true white”
“Bad shrinkage”
“not as durable as I hoped”
“They fit a little weird in the material kind of strange”
“These feel thick”
“Not as soft as more expensive kind”
“gave my son a rash:”
Top return reasons
Common questions
- Is baby onesies 6-9 months boy profitable to sell on Amazon United States?
- The niche generates $471K/yr across 63 tracked products. 16 of 18 products launched in the last 360 days are still selling. 90-day search growth is -10.6%. Flapen's verdict: Skip it (46/100).
- How competitive is the baby onesies 6-9 months boy niche?
- 19 brands and 30 sellers compete. The top 5 products take 34% of clicks and top 5 brands hold 83% of demand.
- What do buyers complain about in baby onesies 6-9 months boy?
- Top complaints mined from reviews: Size-Overall, Advertised Vs Actual Product, Quality-Overall. The return rate is 2.2%.
- When does demand for baby onesies 6-9 months boy peak?
- Demand peaks in Oct–Nov; the busiest month runs 9.6× the quietest.
- What does it cost to enter the baby onesies 6-9 months boy niche?
- Listings span $2.45–$45.21; the average listing price is $20.16 (sweet spot $15–$100). The average incumbent carries 23,401 reviews — the moat a new listing must climb.