---
title: "Girls Bikini Underwear Size 12 — Amazon US Product Research"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/girls-bikini-underwear-size-12"
last_updated: "2026-08-12T19:57:35.391Z"
locale: en
meta:
description: "Amazon product research for girls bikini underwear size 12: demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for girls bikini underwear size 12: demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "Girls Bikini Underwear Size 12 — Amazon US Product Research"
---
# **Girls Bikini Underwear Size 12**
**Worth a look**
Shows a sweet-spot price point ($25.73 avg), but a small market ($44K/yr) keeps it on the watch list.
Market size 11Growth 53Conversion 22Competition 89Returns 82Price range 82Avg price 95Brand share 31Review moat 50Quality gap 18
**Avg price**
**Incredible****$25.73**
avg listing price — sweet spot $15–$100
**Competition**
**Great****26%**
top-5 click share — an open shelf
**Returns**
**Great****1.7%**
return rate — above 5% kills the launch gate
**Price range**
**Great****$10.06–$41.22**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Growth**
**Good****+24.0%**
90-day search growth — must beat 0% to launch
**Review moat**
**Okay****1,523.93**
avg incumbent reviews — the moat a new listing must climb
**Brand share**
**Okay****86%**
top-5 brand share — brands hold most of the demand
**Conversion**
**Bad****1.8%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Market size**
**Bad****$44K**
$44K/yr · 95K searches
## **Is girls bikini underwear size 12 profitable on Amazon?**
According to Flapen's Amazon United States niche tracking, girls bikini underwear size 12 is a $44K/yr Amazon United States market (95K searches/yr). The top 5 brands hold 86% of demand. Demand peaks in May–Jun. Verdict: Worth a look — 50/100.
Data updated Jul 11, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **girls bikini underwear size 12 market size & sales**
Units sold, revenue, conversion and listing quality across the tracked shelf.
- **Units sold / yr**
- **2K–2K**
- avg 0–100/product
- **Revenue / yr**
- **$39K–$51K**
- units × avg price
- **Conversion rate**
- **1.8%**
- **Avg BSR**
- **#70**
- **Page quality**
- **0%**
- **Prime**
- **89%**
- **Sponsored**
- **95%**
- **Out of stock**
- **7.5%**
- **Avg brand age**
- **42 months**
- **Avg seller age**
- **144 days**
## **Competition: brands, sellers & click share**
Clicks spread well past the top 5 (26% combined) — an open shelf where new products get seen.
**Brands**
**14 **▼falling
**Sellers**
**19**
**Top-5 brand share**
**86%**
Top 20: 100%
**Top-5 click share**
**26%**
Top 20: 58%
**Open market**
**9%**
- Lucky & Me45% - Burt's Bees Baby16% - Hanes10% - BAMBOO COOL10% - Barara King5% - Winging Day4% - Open — no brand owns it (8 brands, 9%)
## **girls bikini underwear size 12 demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +24.0% search growth over the last 90 days.
5K4KSpike '24Holiday '24Spike '25Prime Day '25Holiday '25 seasonSepDecMarJunAugNovMarMay
Peak months: May, Jun · busiest ÷ quietest = 2.0×
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/girls-bikini-underwear-size-12/trend)
## **Top girls bikini underwear size 12 search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **lucky and me girls underwear**26K/yr+10.5%1.1% conv. - **organic girls underwear**13K/yr+28.2%1.2% conv. - **hanna andersson underwear**11K/yr+59.9%0.5% conv. - **organic underwear girls**13K/yr+20.8%1.5% conv. - **organic cotton underwear toddler girl**5K/yr+52.1%1.9% conv. - **organic cotton kids underwear**6K/yr+30.9%0.9% conv. - **girls organic underwear**7K/yr+14.0%1.0% conv. - **lucky and me**6K/yr+28.9%0.4% conv. - **lucky me underwear girls**3K/yr+11.0%1.8% conv. - **lucky and me underwear**3K/yr+10.4%0.7% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/girls-bikini-underwear-size-12/search-terms)
## **Top girls bikini underwear size 12 products & what they sell for**
Every tracked product — its share of the shelf, its review moat, and what it sells for.
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%3%$1K6%$3K9%$4K12%$5K101001K10K100K 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**Lucky & Me Gracie Girls Briefs 100% Organic Cotton Underwear 7 Pack (US Age 7 Years 8 Years Seahorse)**Lucky & Me**$39.39**4.7★1,228 rev](https://www.amazon.com/dp/B0DYZKX8K4) [2**Lucky & Me Ryleigh Girls Bikini | Childrens Organic Cotton Tagless Underwear | 7-Pack**Lucky & Me**$39.19**4.6★66 rev](https://www.amazon.com/dp/B096G9T8XV) [3**Hanes Girls Organic Underwear Brief & Hipster Toddler & Girl Sizes Pure Comfort 100% Cotton Panties 8-Pack**Hanes**$12.08**4.6★1,827 rev](https://www.amazon.com/dp/B0BYB1GQSN) [4**Burts Bees Baby Toddler Girls Underwear Organic Cotton Panties Tag-Free Comfort Briefs Pack of 5**Burt's Bees Baby**$18.77**4.9★1,444 rev](https://www.amazon.com/dp/B0C6FQ3QK7) [5**BAMBOO COOL Girls Underwear Tagless Bamboo Viscose Soft Full Coverage Kids Panties 6-14 Years Briefs 6-Pack**BAMBOO COOL**$26.43**4.8★203 rev](https://www.amazon.com/dp/B0F47TKGQS)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**BAMBOO COOL Girls Underwear Breathable Moisture-Wicking 6-14Y Panties Lightweight Soft Sensory Friendly Briefs 6 Pack**BAMBOO COOL**$26.48**226 rev11mo ago](https://www.amazon.com/dp/B0FJFBNZDH) [**BAMBOO COOL Girls Underwear Tagless Bamboo Viscose Soft Full Coverage Kids Panties 6-14 Years Briefs 6-Pack**BAMBOO COOL**$25.93**203 rev11mo ago](https://www.amazon.com/dp/B0FJBD43YY) [**BAMBOO COOL Girls Underwear Tagless Bamboo Viscose Soft Full Coverage Kids Panties 6-14 Years Briefs 6-Pack**BAMBOO COOL**$26.43**203 rev1y ago](https://www.amazon.com/dp/B0F47TKGQS) [**Lucky & Me Gracie Girls Briefs 100% Organic Cotton Underwear 7 Pack (US Age 7 Years 8 Years Seahorse)**Lucky & Me**$39.39**1,228 rev1y ago](https://www.amazon.com/dp/B0DYZKX8K4) [**Lucky & Me Erica Girls GOTS Organic Cotton Bikinis 6 Pack (US Age 9 Years 10 Years Fairground Fun)**Lucky & Me**$37.29**253 rev1y ago](https://www.amazon.com/dp/B0DYZKLZZN)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Winging Day Little Girls Assorted Prints Cotton Panties Size 6 (6-Pack)**Winging Day**$17.00**4.7★**▲ 51%**](https://www.amazon.com/dp/B0CSXTPN1Z) [**BAMBOO COOL Girls Underwear Tagless Bamboo Viscose Soft Full Coverage Kids Panties 6-14 Years Briefs 6-Pack**BAMBOO COOL**$25.93**4.8★**▲ 49%**](https://www.amazon.com/dp/B0FJBD43YY) [**Lucky & Me Gracie Girls Briefs 100% Organic Cotton Underwear 7 Pack (US Age 7 Years 8 Years Seahorse)**Lucky & Me**$39.39**4.7★**▲ 42%**](https://www.amazon.com/dp/B0DYZKX8K4) [**BAMBOO COOL Girls Underwear Breathable Moisture-Wicking 6-14Y Panties Lightweight Soft Sensory Friendly Briefs 6 Pack**BAMBOO COOL**$26.48**4.9★**▲ 42%**](https://www.amazon.com/dp/B0FJFBNZDH) [**Barara King Little Girls Undies Soft Cotton Panties Kids Underwear (Pack of 6) Size 5**Barara King**$15.11**4.8★**▲ 33%**](https://www.amazon.com/dp/B0D91HD7HZ)
**~~View all trending →~~**
## **What reviews say buyers love and hate about girls bikini underwear size 12**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Comfort-Overall**15%
*“Super comfortable”*
**Quality-Overall**14%
*“Well made and they are comfortable on the kids”*
**Soft Feel**14%
*“So soft”*
**Size-Overall**14%
*“fit well grandkids love them”*
**Value For Money**4%
*“Great value”*
**Material Quality**4%
*“Good material”*
**Design-Overall**3%
*“have cute designs”*
**Color**3%
*“The colors are bright”*
**Breathability**3%
*“breathable”*
**Stretchability/Expandability/Elasticity**2%
*“Soft fabric and elastic bands don't leave marks”*
### **What buyers complain about **
**Size-Overall**36%
*“To small”*
**Allergies**4%
*“0 stars- caused horrible skin irritation for my daughter”*
**Stretchability/Expandability/Elasticity**4%
*“Poor quality elastic”*
**Value For Money**3%
*“Waste of money”*
**Thin**3%
*“Very thin”*
**Hard Feel**3%
*“not soft I finally found these”*
**Comfort-Overall**2%
*“Scratchy and not comfortable”*
**Absorbency**2%
*“They dont absorb at all”*
**Shrinkage Resistance**2%
*“shrunk so much granddaughter couldnt wear them”*
**Quality-Overall**2%
*“Look like cheap”*
### **Top return reasons **
**Size-Overall**62%
**Waist Fit**8%
**Material Quality**6%
**Value For Money**3%
**Thigh Fit**3%
**Advertised Vs Actual Product**2%
**Thin**2%
**Length**1%
**Shape/Style**1%
**Quality-Overall**1%
## **Common girls bikini underwear size 12 questions**
- **Is girls bikini underwear size 12 profitable to sell on Amazon United States?**
- The niche generates $44K/yr across 76 tracked products. 12 of 14 products launched in the last 360 days are still selling. 90-day search growth is +24.0%. Flapen's verdict: Worth a look (50/100).
- **How competitive is the girls bikini underwear size 12 niche?**
- 14 brands and 19 sellers compete. The top 5 products take 26% of clicks and top 5 brands hold 86% of demand.
- **What do buyers complain about in girls bikini underwear size 12?**
- Top complaints mined from reviews: Size-Overall, Allergies, Stretchability/Expandability/Elasticity. The return rate is 1.7%.
- **When does demand for girls bikini underwear size 12 peak?**
- Demand peaks in May–Jun; the busiest month runs 2.0× the quietest.
- **What does it cost to enter the girls bikini underwear size 12 niche?**
- Listings span $10.06–$41.22; the average listing price is $25.73 (sweet spot $15–$100). The average incumbent carries 1,524 reviews — the moat a new listing must climb.
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