---
title: "Baby Girl Swimsuit 6-9 Months — $146K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/baby-girl-swimsuit-6-9-months"
last_updated: "2026-08-09T12:34:19.861Z"
locale: en
meta:
description: "Niche score 55/100 · $146K/yr market · 684K searches/yr · $17.44 avg price. Weak search conversion (1.2%) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 55/100 · $146K/yr market · 684K searches/yr · $17.44 avg price. Weak search conversion (1.2%) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Baby Girl Swimsuit 6-9 Months — $146K/yr Amazon US Niche (2026) - Flapen"
---
# **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.
Market size 32Growth 70Conversion 15Competition 97Returns 31Price range 84Avg price 81Brand share 79Review moat 59Quality gap 18
**Competition**
**Incredible****14%**
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**
**Great****56%**
top-5 brand share — no brand owns this niche
**Growth**
**Good****+52.6%**
90-day search growth — must beat 0% to launch
**Review moat**
**Good****1,122.28**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Okay****$146K**
$146K/yr · 684K searches
**Returns**
**Okay****4.5%**
return rate — above 5% kills the launch gate
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Conversion**
**Bad****1.2%**
search→purchase rate — share of searches ending in a sale
**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=us&signal=no_dominant_brand "Top brand's click share < 20%")
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 ~~](https://flapen.com/research/methodology)
## **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**
**49**
**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.
30K20KSpike '25Black Friday '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Mar, Apr, May, Jun, Jul · busiest ÷ quietest = 7.2×
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/baby-girl-swimsuit-6-9-months/trend)
## **Top baby girl swimsuit 6-9 months search terms**
- **0-3 month swimsuit for girls**73K/yr+181.1%0.9% conv. - **3-6 month swimsuit girl**68K/yr+127.3%1.5% conv. - **newborn swimsuit girl**69K/yr+103.4%0.6% conv. - **6-9 month swimsuit girls**53K/yr+56.1%1.5% conv. - **baby swim suit**48K/yr+31.9%0.3% conv. - **baby girl swimsuit 6-9 months**50K/yr+12.1%1.2% conv. - **traje de bao para bebe**40K/yr+83.1%0.2% conv. - **infant swimsuit**36K/yr+55.9%0.3% conv. - **newborn bathing suit girl**33K/yr+77.0%0.6% conv. - **baby girl swimsuit 3-6 months**36K/yr-12.6%0.9% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/baby-girl-swimsuit-6-9-months/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.
0%1%$1K2%$3K3%$4K4%$6K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
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
[1**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**$18.19**4.8★294 rev](https://www.amazon.com/dp/B0F32DB3XV) [2**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**$19.80**4.8★992 rev](https://www.amazon.com/dp/B0B3D6CL5Y) [3**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**$28.11**4.9★7,321 rev](https://www.amazon.com/dp/B0CDCP3Y9V) [4**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**$17.90**4.8★294 rev](https://www.amazon.com/dp/B0F32G1NS6) [5**SODLON Baby Girl Swimsuit 6-12 Months Pink Strawberry Long Sleeve One-Piece Infant Bathing Suit Girl Beach Hat Swimwear**SODLON**$11.75**4.7★451 rev](https://www.amazon.com/dp/B0DR6174D2)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Simple Joys by Carters Baby and Toddler Girls 1-Piece Zip Rashguard**Simple Joys by Carter's**$15.87**7,463 rev2mo ago](https://www.amazon.com/dp/B09FTFWFNZ) [**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**$14.73**110 rev7mo ago](https://www.amazon.com/dp/B0G3WXQN8S) [**AMAWMW Infant Baby Girl Swimsuit Long Sleeve One-Piece Swimwear with Hat Rash Guard Floral Zipper Bathing Suit Beach Wear**AMAWMW**$20.48**55 rev7mo ago](https://www.amazon.com/dp/B0G2WXGP9F) [**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**$10.85**139 rev8mo ago](https://www.amazon.com/dp/B0FZKQZD5S) [**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**$9.92**139 rev8mo ago](https://www.amazon.com/dp/B0FZKQBVY1)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**SwimZip Little Girl Long Sleeve Sunsuit with UPF 50 Sun Protection Palm 0-6 Month**SwimZip**$43.73**4.6★**▲ 22%**](https://www.amazon.com/dp/B07CV2339T) [**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**$14.73**4.6★**▲ 21%**](https://www.amazon.com/dp/B0G3WXQN8S) [**Renotemy Newborn Baby Swimsuit Girl One-Piece Sleeveless Bikini Tankini Baby Girls Swimwear 0-3 Month Swimsuit for Girls Rash Guard Strawberry Bathing Suit Baby Girl with Sunhat Baby Beach Essentials**Renotemy**$14.95**4.6★**▲ 20%**](https://www.amazon.com/dp/B0DR2XL6VX) [**UMELOK Baby Girls Swimwear Sets One Piece Rash Guard Swimsuit with Sun Hat (Pink Tropical jungle 9-12 months)**UMELOK**$15.94**4.6★**▲ 19%**](https://www.amazon.com/dp/B0BNH3W7FS) [**UMELOK Baby Girls Swimsuit One Piece Full Zip with Long Sleeve UPF 50+ Sun Protection Sunsuit Pink Flower 9M**UMELOK**$18.65**4.8★**▲ 18%**](https://www.amazon.com/dp/B0C1SC2QCK)
**~~View all trending →~~**
## **What buyers say about baby girl swimsuit 6-9 months**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**27%
*“Fit is accurate”*
**Quality-Overall**17%
*“Good quality”*
**Material Quality**8%
*“The material is really nice; soft, good quality, and comfortable for my baby”*
**Color**7%
*“The colors are vibrant”*
**Stretchability/Expandability/Elasticity**5%
*“it stretches great”*
**Value For Money**4%
*“Great value for money”*
**Soft Feel**3%
*“Material is soft”*
**Ease Of Use**2%
*“Plus its super convenient”*
**Water Resistance**2%
*“Great for swimming and summer days”*
**Design-Overall**2%
*“The design is cute”*
### **What buyers complain about **
**Size-Overall**43%
*“Fits small”*
**Zipper Quality**6%
*“Dumb zipper placement”*
**Quality-Overall**5%
*“Poor quality”*
**Durability**5%
*“Broke before use”*
**Value For Money**3%
*“This bathing suit is too expensive to leave her skin pink”*
**Sleeve Fit**3%
*“The sleeves are little long on her though”*
**Material Quality**2%
*“Bad material”*
**Smell**2%
*“It took two washes to get the smell out”*
**Machine Wash Suitability**2%
*“It took two washes to get the smell out”*
**Stretchability/Expandability/Elasticity**1%
*“the elastic on the hat”*
### **Top return reasons **
**Size-Overall**74%
**Length**8%
**Advertised Vs Actual Product**2%
**Value For Money**2%
**Material Quality**2%
**Color**2%
**Chest Fit**2%
**Waist Fit**1%
**Hip Fit**1%
**Zipper Quality**1%
## **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.
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