baby onesies 6-9 months girl
Skip itA small market ($65K/yr) — this niche doesn't clear our bar today.
Competition
Great23%top-5 click share — an open shelf
Avg price
Great$21.36avg listing price — sweet spot $15–$100
Price range
Great$7.42–$58.34cheapest to priciest tracked listing — scored on the share inside $15–$100
Returns
Good2.0%return rate — above 5% kills the launch gate
Brand share
Okay81%top-5 brand share — brands hold most of the demand
Conversion
Okay2.9%search→purchase rate — share of searches ending in a sale
Growth
Okay+2.7%90-day search growth — must beat 0% to launch
Review moat
Bad19,199.28avg incumbent reviews — the moat a new listing must climb
Market size
Bad$65K$65K/yr · 106K searches
Quality gap
Bad4.8★avg incumbent rating — lower means beatable quality
According to Flapen's Amazon United States niche tracking, baby onesies 6-9 months girl is a $65K/yr Amazon United States market (106K searches/yr). The top 5 brands hold 81% of demand. Verdict: Skip it — 47/100.
Data updated Jul 8, 2026 · scored weekly · How we score niches
baby onesies 6-9 months girl market data
- Units sold / yr
- 3K–3K
- avg 0–100/product
- Revenue / yr
- $53K–$64K
- units × avg price
- Conversion rate
- 2.9%
- Avg BSR
- #71
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 96%
- Out of stock
- 5.8%
- Avg brand age
- 36 months
- Avg seller age
- 180 days
Competition & brand share
Clicks spread well past the top 5 (23% combined) — an open shelf where new products get seen.Brands
20 rising
Sellers
22
Top-5 brand share
81%
Top 20: 100%
Top-5 click share
23%
Top 20: 54%
Open market
14%
- Gerber36%
- Simple Joys by Carter's14%
- Amazon Essentials13%
- Onesies Brand13%
- Butterblu5%
- Yoofoss4%
- Open — no brand owns it (14 brands, 14%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +2.7% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.3×
Top baby onesies 6-9 months girl search terms
- baby girl onesies 6-9 months35K/yr
- 6 month onesies girl12K/yr
- 9 month onesies girl12K/yr
- onesie 6-9 months girl11K/yr
- onesies 6-9 months girl10K/yr
- 6-9 month onesies girl9K/yr
- 6-9 month girl onesies10K/yr
- girl onesies 6-9 months4K/yr
- baby onesies 6-9 months girl3K/yr
Top baby onesies 6-9 months girl 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
Simple Joys by Carters Womens 6-Pack Short-Sleeve Bodysuit (Infant) Pink Dino/Floral/Mint/White/Gray 9 Months (Infant) One Size
Simple Joys by Carter's$18.094.8★69,956 rev
Gerber Baby 8-Pack Short Sleeve Onesies Bodysuits Solid White 6-9 Months
Gerber$16.824.8★56,105 rev
Gerber Baby 5-Pack Solid Onesies Bodysuits White 6-9 Months
Gerber$13.084.8★58,053 rev
Gerber Baby Girls 8-pack Short Sleeve Onesies Bodysuits Shirt Golden Floral 6-9 Months US
Gerber$24.104.8★31,228 rev
Onesies Brand Baby Girls 3-Pack Romper Fox 6-9 Months
Onesies Brand$22.264.8★2,230 rev
Newest
by launch dateSimple Joys by Carters Womens 6-Pack Short-Sleeve Bodysuit (Infant) Pink Dino/Floral/Mint/White/Gray 9 Months (Infant) One Size
Simple Joys by Carter's$18.0969,956 rev
Simple Joys by Carters Baby Girls Short-sleeve Bodysuit Pack of 6 Pink/Yellow 6-9 Months
Simple Joys by Carter's$17.3169,956 rev
Simple Joys by Carters Baby Girls Short-Sleeve Bodysuit Pack of 6 Multicolor/Ditsy Floral/Floral/Polka Dot/Tropical 6-9 Months
Simple Joys by Carter's$18.8069,956 rev
Yoofoss Baby Pajamas 100% Organic Cotton Baby Sleepers for 6-9 Month Boys Girls Clothes 3-Pack Soft infant Toddler Footed PJs with Mitten Cuffs Zipper Footies Pajamas
Yoofoss$25.141,181 rev
Butterblu Rory 5-Pack Short Sleeve Ruffle Shoulder Bodysuits 100% Organic Cotton for Baby Girls Sunset 6-9 Months
Butterblu$29.90101 rev
Trending
90-day click momentum
Amazon Essentials Baby Girls Sleeveless Bodysuit Dress Pack of 3 Pale Yellow/Floral 6-9 Months
Amazon Essentials$19.614.8★
Amazon Essentials Baby Girls Sleeveless Bodysuit Dress Pack of 3 Pink/Apples 6-9 Months
Amazon Essentials$19.544.8★
Amazon Essentials Baby Girls Short Sleeve Bodysuit Dress Everyday Dresses Pack of 3 Pale Yellow/Floral 6-9 Months
Amazon Essentials$22.824.8★
Yoofoss Baby Pajamas 100% Organic Cotton Baby Sleepers for 6-9 Month Boys Girls Clothes 3-Pack Soft infant Toddler Footed PJs with Mitten Cuffs Zipper Footies Pajamas
Yoofoss$25.144.7★
Butterblu Rory 5-Pack Short Sleeve Ruffle Shoulder Bodysuits 100% Organic Cotton for Baby Girls Sorbet 12 Months
Butterblu$32.164.9★
What buyers say about baby onesies 6-9 months girl
What buyers praise and complain about, mined from review topics.What buyers love
“Good quality”
“Fit/size is consistent with other brands”
“these stay surprisingly soft”
“sturdy material”
“Good value for money”
“Comfy and cute”
“These made a great gift”
“Warm and cozy”
“Love the colors”
“Super cute prints”
What buyers complain about
“Terrible fit”
“Cheap”
“Love them, just thought they would have been a bit thicker”
“Zipper and material feels cheap”
“Too thin”
“Cheap material”
“Arrived used”
“After one wash they shrunk”
“these tore the second time our baby wore them”
“i wish there are multiple colors”
Top return reasons
Common questions
- Is baby onesies 6-9 months girl profitable to sell on Amazon United States?
- The niche generates $65K/yr across 95 tracked products. 20 of 33 products launched in the last 360 days are still selling. 90-day search growth is +2.7%. Flapen's verdict: Skip it (47/100).
- How competitive is the baby onesies 6-9 months girl niche?
- 20 brands and 22 sellers compete. The top 5 products take 23% of clicks and top 5 brands hold 81% of demand.
- What do buyers complain about in baby onesies 6-9 months girl?
- Top complaints mined from reviews: Size-Overall, Quality-Overall, Thickness. The return rate is 2.0%.
- When does demand for baby onesies 6-9 months girl peak?
- Demand is steady year-round — the busiest month runs 1.3× the quietest.
- What does it cost to enter the baby onesies 6-9 months girl niche?
- Listings span $7.42–$58.34; the average listing price is $21.36 (sweet spot $15–$100). The average incumbent carries 19,199 reviews — the moat a new listing must climb.