Is baby girl swimsuit 6-9 months profitable to sell on Amazon United States?

The niche generates $146K/yr across 177 tracked products. 21 of 86 products launched in the last 360 days are still selling. 90-day search growth is +52.6%. Flapen's verdict: Worth a look (55/100).

How competitive is the baby girl swimsuit 6-9 months niche?

38 brands and 49 sellers compete. The top 5 products take 14% of clicks and top 5 brands hold 56% of demand.

What do buyers complain about in baby girl swimsuit 6-9 months?

Top complaints mined from reviews: Size-Overall, Zipper Quality, Quality-Overall. The return rate is 4.5%.

When does demand for baby girl swimsuit 6-9 months peak?

Demand peaks in Mar–Apr–May–Jun–Jul; the busiest month runs 7.2× the quietest.

What does it cost to enter the baby girl swimsuit 6-9 months niche?

Listings span $9.86–$48.42; the average listing price is $17.44 (sweet spot $15–$100). The average incumbent carries 1,122 reviews — the moat a new listing must climb.

baby girl swimsuit 6-9 months

Worth a look

Shows a fragmented shelf (top 5 take 14% of clicks), but weak search conversion (1.2%) keeps it on the watch list.

Competition

Incredible14%

top-5 click share — an open shelf

Price range

Great$9.86–$48.42

cheapest to priciest tracked listing — scored on the share inside $15–$100

Avg price

Great$17.44

avg listing price — sweet spot $15–$100

Brand share

Great56%

top-5 brand share — no brand owns this niche

Growth

Good+52.6%

90-day search growth — must beat 0% to launch

Review moat

Good1,122.28

avg incumbent reviews — the moat a new listing must climb

Market size

Okay$146K

$146K/yr · 684K searches

Returns

Okay4.5%

return rate — above 5% kills the launch gate

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

Conversion

Bad1.2%

search→purchase rate — share of searches ending in a sale

Signals No Dominant Brand

According to Flapen's Amazon United States niche tracking, baby girl swimsuit 6-9 months is a $146K/yr Amazon United States market (684K searches/yr). The top 5 brands hold 56% of demand. Demand peaks in Mar–Apr–May–Jun–Jul. Verdict: Worth a look — 55/100.

Data updated Jul 8, 2026 · scored weekly · How we score niches

baby girl swimsuit 6-9 months market data

Units sold / yr: 8K–10K; avg 0–100/product
Revenue / yr: $140K–$174K; units × avg price
Conversion rate: 1.2%
Avg BSR: #38
Page quality: 0%
Prime: 99%
Sponsored: 90%
Out of stock: 1.0%
Avg brand age: 31 months
Avg seller age: 173 days

Competition & brand share

Clicks spread well past the top 5 (14% combined) — an open shelf where new products get seen.

Brands

38 falling

Sellers

Top-5 brand share

56%

Top 20: 90%

Top-5 click share

14%

Top 20: 36%

Open market

40%

YOUNGER TREE17%
RuffleButts12%
Renotemy10%
UMELOK9%
SODLON9%
Simple Joys by Carter's4%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +52.6% search growth over the last 90 days.

Peak months: Mar, Apr, May, Jun, Jul · busiest ÷ quietest = 7.2×

Open Trend

Top baby girl swimsuit 6-9 months search terms

0-3 month swimsuit for girls73K/yr +181.1%0.9% conv.
3-6 month swimsuit girl68K/yr +127.3%1.5% conv.
newborn swimsuit girl69K/yr +103.4%0.6% conv.
6-9 month swimsuit girls53K/yr +56.1%1.5% conv.
baby swim suit48K/yr +31.9%0.3% conv.
baby girl swimsuit 6-9 months50K/yr +12.1%1.2% conv.
traje de bao para bebe40K/yr +83.1%0.2% conv.
infant swimsuit36K/yr +55.9%0.3% conv.
newborn bathing suit girl33K/yr +77.0%0.6% conv.
baby girl swimsuit 3-6 months36K/yr -12.6%0.9% conv.

All search terms

Top baby girl swimsuit 6-9 months 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.

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

Infant Baby Swimsuit Girl Long Sleeve UPF 50+ Sun Protection One-Piece Rash Guard with Hat Zipper Bathing Suit (Pink Bow 3-6 Months)

YOUNGER TREE$18.194.8★294 rev

Infant Baby Girl Swimsuit One-Piece Long Sleeve Rash Guard with Hat Set Floral Zipper Bathing Suit Leopard Beach Wear (3-6 Months Flower#2)

YOUNGER TREE$19.804.8★992 rev

RuffleButts Baby Girls UPF 50+ Sun Protection Novelty Print Long Sleeve One Piece Rash Guard Swimsuit with Zipper - Orange You The Sweetest 6-12m

RuffleButts$28.114.9★7,321 rev

Infant Baby Swimsuit Girl Long Sleeve UPF 50+ Sun Protection One-Piece Rash Guard with Hat Zipper Bathing Suit (Yellow Floral 0-3 Months)

YOUNGER TREE$17.904.8★294 rev

SODLON Baby Girl Swimsuit 6-12 Months Pink Strawberry Long Sleeve One-Piece Infant Bathing Suit Girl Beach Hat Swimwear

SODLON$11.754.7★451 rev

Newest

by launch date

Simple Joys by Carters Baby and Toddler Girls 1-Piece Zip Rashguard

Simple Joys by Carter's$15.877,463 rev

2mo ago

Baby Swimsuit Girl Rash Guard Set Long Sleeve UPF Infant Bathing Suit with Hat & Headband Bottom Snaps for Easy Diaper Change Baby Swim Suit Beige Butterfly 3-6 Months

FishingDino$14.73110 rev

7mo ago

AMAWMW Infant Baby Girl Swimsuit Long Sleeve One-Piece Swimwear with Hat Rash Guard Floral Zipper Bathing Suit Beach Wear

AMAWMW$20.4855 rev

7mo ago

Baby Girl Swimsuit 3-6 Months Summer Baby Bathing Suit Girls Blue Daisy Floral Long Sleeve One-Piece Zipper Rash Guard Ruffle Swimwear with Hat Infant Swimsuit Girl 3-6 Months Beach Essentials

Yhnslsf$10.85139 rev

8mo ago

Baby Girl Swimsuit 6-9 Months Infant Baby Girl Bathing Suit 9-12 Months Long Sleeve Blue Daisy Floral Ruffle One-Piece Zipper Baby Rash Guard Swim Suit with Hat Summer Beach Essentials

Yhnslsf$9.92139 rev

8mo ago

What buyers say about baby girl swimsuit 6-9 months

What buyers praise and complain about, mined from review topics.

What buyers love

Size-Overall27%

“Fit is accurate”

Quality-Overall17%

“Good quality”

Material Quality8%

“The material is really nice; soft, good quality, and comfortable for my baby”

Color7%

“The colors are vibrant”

Stretchability/Expandability/Elasticity5%

“it stretches great”

Value For Money4%

“Great value for money”

Soft Feel3%

“Material is soft”

Ease Of Use2%

“Plus its super convenient”

Water Resistance2%

“Great for swimming and summer days”

Design-Overall2%

“The design is cute”

What buyers complain about

Size-Overall43%

“Fits small”

Zipper Quality6%

“Dumb zipper placement”

Quality-Overall5%

“Poor quality”

Durability5%

“Broke before use”

Value For Money3%

“This bathing suit is too expensive to leave her skin pink”

Sleeve Fit3%

“The sleeves are little long on her though”

Material Quality2%

“Bad material”

Smell2%

“It took two washes to get the smell out”

Machine Wash Suitability2%

“It took two washes to get the smell out”

Stretchability/Expandability/Elasticity1%

“the elastic on the hat”

Top return reasons

Size-Overall74%

Length8%

Advertised Vs Actual Product2%

Value For Money2%

Material Quality2%

Color2%

Chest Fit2%

Waist Fit1%

Hip Fit1%

Zipper Quality1%

Common questions

Is baby girl swimsuit 6-9 months profitable to sell on Amazon United States?: The niche generates $146K/yr across 177 tracked products. 21 of 86 products launched in the last 360 days are still selling. 90-day search growth is +52.6%. Flapen's verdict: Worth a look (55/100).
How competitive is the baby girl swimsuit 6-9 months niche?: 38 brands and 49 sellers compete. The top 5 products take 14% of clicks and top 5 brands hold 56% of demand.
What do buyers complain about in baby girl swimsuit 6-9 months?: Top complaints mined from reviews: Size-Overall, Zipper Quality, Quality-Overall. The return rate is 4.5%.
When does demand for baby girl swimsuit 6-9 months peak?: Demand peaks in Mar–Apr–May–Jun–Jul; the busiest month runs 7.2× the quietest.
What does it cost to enter the baby girl swimsuit 6-9 months niche?: Listings span $9.86–$48.42; the average listing price is $17.44 (sweet spot $15–$100). The average incumbent carries 1,122 reviews — the moat a new listing must climb.