---
title: "Period Underwear for Teens — $715K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/period-underwear-for-teens"
last_updated: "2026-08-11T18:20:48.725Z"
locale: en
meta:
description: "Niche score 47/100 · $715K/yr market · 1.2M searches/yr · $22.86 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 47/100 · $715K/yr market · 1.2M searches/yr · $22.86 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Period Underwear for Teens — $715K/yr Amazon US Niche (2026) - Flapen"
---
# **period underwear for teens**
**Skip it**
Soft demand (-5.8% this quarter) — this niche doesn't clear our bar today.
Market size 69Growth 22Conversion 33Competition 49Returns 35Price range 87Avg price 95Brand share 36Review moat 36Quality gap 48
**Avg price**
**Incredible****$22.86**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$11.01–$53.28**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Good****$715K**
$715K/yr · 1.2M searches
**Competition**
**Okay****56%**
top-5 click share — leaders hold, buyers still browse
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Okay****84%**
top-5 brand share — brands hold most of the demand
**Review moat**
**Okay****2,891.38**
avg incumbent reviews — the moat a new listing must climb
**Returns**
**Okay****4.2%**
return rate — above 5% kills the launch gate
**Conversion**
**Okay****2.6%**
search→purchase rate — share of searches ending in a sale
**Growth**
**Bad****-5.8%**
90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, period underwear for teens is a $715K/yr Amazon United States market (1.2M searches/yr). The top 5 brands hold 84% of demand. Demand peaks in Jan–Aug. Verdict: Skip it — 47/100.
Data updated Jul 11, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **period underwear for teens market data**
- **Units sold / yr**
- **30K–40K**
- avg 1,250–1,500/product
- **Revenue / yr**
- **$686K–$914K**
- units × avg price
- **Conversion rate**
- **2.6%**
- **Avg BSR**
- **#59**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **88%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **42 months**
- **Avg seller age**
- **145 days**
## **Competition & brand share**
The top 5 products take 56% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**12 **▼falling
**Sellers**
**19**
**Top-5 brand share**
**84%**
Top 20: 100%
**Top-5 click share**
**56%**
Top 20: 91%
**Open market**
**12%**
- Demifill31% - Mesachy21% - Hanes14% - INNERSY9% - Nalwort9% - TIICHOO4% - Open — no brand owns it (6 brands, 12%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -5.8% search growth over the last 90 days.
35K25KPrime Day '24Spike '24Holiday '24Spike '25Prime Day '25Holiday '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jan, Aug · busiest ÷ quietest = 1.9×
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/period-underwear-for-teens/trend)
## **Top period underwear for teens search terms**
- **period underwear for teens**596K/yr-12.9%2.4% conv. - **girls period underwear**142K/yr-3.4%1.5% conv. - **teen period underwear**85K/yr+36.4%2.2% conv. - **period panties for teens**99K/yr+11.7%2.3% conv. - **thinx**95K/yr-7.0%0.2% conv. - **tween period underwear**33K/yr-0.2%2.1% conv. - **teen period panties**68K/yr-66.5%1.5% conv. - **period underwear teens**11K/yr+6.5%2.0% conv. - **period underwear for teens heavy flow**13K/yr-1.0%1.5% conv. - **girl period underwear**10K/yr+9.7%1.6% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/period-underwear-for-teens/search-terms)
## **Top period underwear for teens 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%10%$72K20%$143K30%$215K40%$286K101001K10K100K 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**Demifill Teen Girls Period Panties Juniors First Period Starter Underwear Soft Briefs 12-14Years**Demifill**$21.19**4.4★4,942 rev](https://www.amazon.com/dp/B09N1F5YV3) [2**Mesachy Teens Girls Period Underwear Kids Period Panties Menstrual Leakproof Protective Underwear for Teens Cotton Briefs**Mesachy**$17.76**4.5★1,468 rev](https://www.amazon.com/dp/B0BWH9TDPM) [3**Nalwort Teen Girls Period Underwear Menstrual Period Panties Leak-Proof Cotton Protective Briefs Pack of 6(Multicolor-5 12-14 Years)**Nalwort**$23.51**4.5★9,095 rev](https://www.amazon.com/dp/B07QK6PQRF) [4**Mesachy Teens Girls Period Underwear Kids Period Panties Menstrual Leakproof Protective Underwear for Teens Cotton Briefs**Mesachy**$21.42**4.5★1,468 rev](https://www.amazon.com/dp/B0BWHJF5WV) [5**Hanes Girls Hipster Period Underwear Comfort Period. Panties Moderate Protection 6-Pack**Hanes**$20.48**4.4★1,146 rev](https://www.amazon.com/dp/B0CVS5SM3C)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Musort Period Underwear for Teens Heavy Flow High Absorbency Girls Menstrual Panties Cotton Leakproof Protective Briefs**Musort**$11.01**187 rev1y ago](https://www.amazon.com/dp/B0FH6M9FYV) [**TIICHOO Period Panties for Teens Seamless Menstrual Leakproof Underwear for Girls 5-Pack(10-12 Years 2 Black/Beige/Pink/Green)**TIICHOO**$35.07**69 rev1y ago](https://www.amazon.com/dp/B0DT4G3N89) [**INNERSY Girls Period Underwear for Teens Heavy Flow Panties Size 10-18 Hold 4 Tampons 3-Pack(L(12-14 yrs) Solid Black)**INNERSY**$22.84**94 rev1y ago](https://www.amazon.com/dp/B0DSMGLDBV) [**Geronmine Teen Girls Period Panties Heavy Flow High Absorbency First Period Starter Underwear For Teens Menstrual Leakproof Protective Cotton Soft Briefs**Geronmine**$13.66**529 rev2y ago](https://www.amazon.com/dp/B0D7PYBCLY) [**Thinx Teens Period Underwear Brief-Style Period Panties for Teens Holds Up to Regular 12 Tampons* Period Panties Reusable Black 3-Pack Size 13/14**Thinx Teens**$53.28**519 rev2y ago](https://www.amazon.com/dp/B0D38197S5)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Thinx Teens Period Underwear Brief-Style Period Panties for Teens Holds Up to Regular 12 Tampons* Period Panties Reusable Black 3-Pack Size 13/14**Thinx Teens**$53.28**4.6★**▲ 84%**](https://www.amazon.com/dp/B0D38197S5) [**INNERSY Period Underwear for Teens Girls Cotton Leak-Proof Menstrual Panties 3-Pack(Refreshing Blue Pink Polka Dots L(12-14 yrs))**INNERSY**$18.63**4.6★**▲ 60%**](https://www.amazon.com/dp/B0819KYDF5) [**Bambody Absorbent Period Panties - Bamboo Rayon - Period Underwear for Women and Teens - All-Day Long - Overnight Protection- Leakproof - Large - 3 Pack: Black**Bambody**$34.08**4.4★**▲ 56%**](https://www.amazon.com/dp/B0BNP9M6WV) [**Demifill Teen Girls Period Underwear Cotton Soft Women Panties For Teens Briefs S Black**Demifill**$14.73**4.4★**▲ 53%**](https://www.amazon.com/dp/B08BL6BG5Y) [**Mesachy Teens Girls Period Underwear Kids Period Panties Menstrual Leakproof Protective Underwear for Teens Cotton Briefs**Mesachy**$21.42**4.5★**▲ 45%**](https://www.amazon.com/dp/B0BWHJF5WV)
**~~View all trending →~~**
## **What buyers say about period underwear for teens**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Comfort-Overall**27%
*“Super comfortable”*
**Size-Overall**17%
*“True to size and description”*
**Quality-Overall**16%
*“Super well made”*
**Soft Feel**5%
*“Theyre nice and soft”*
**Washability**3%
*“wash well too”*
**Value For Money**3%
*“Worth it”*
**Thickness**3%
*“Nice and thick”*
**Advertised Vs Actual Product**3%
*“it does everything advertised”*
**Color**2%
*“Cute colors”*
**Absorbency**2%
*“Absorbs great and feels amazing”*
### **What buyers complain about **
**Size-Overall**16%
*“The fit is awful”*
**Comfort-Overall**12%
*“Not comfortable”*
**Absorbency**11%
*“NOT ABSORBENT”*
**Functionality-Overall**7%
*“Do not work”*
**Thickness**6%
*“A little thicker than normal underwear”*
**Durability**4%
*“didnt even last 3 hours”*
**Advertised Vs Actual Product**4%
*“False advertising”*
**Material Quality**3%
*“Poor quality material”*
**Value For Money**3%
*“I expected more for the price”*
**Allergies**3%
*“cause chafing on my daughter's skin”*
### **Top return reasons **
**Size-Overall**67%
**Waist Fit**6%
**Material Quality**4%
**Advertised Vs Actual Product**3%
**Thin**3%
**Thigh Fit**2%
**Comfort-Overall**2%
**Length**1%
**Absorbency**1%
**Thickness**1%
## **Common questions**
- **Is period underwear for teens profitable to sell on Amazon United States?**
- The niche generates $715K/yr across 26 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is -5.8%. Flapen's verdict: Skip it (47/100).
- **How competitive is the period underwear for teens niche?**
- 12 brands and 19 sellers compete. The top 5 products take 56% of clicks and top 5 brands hold 84% of demand.
- **What do buyers complain about in period underwear for teens?**
- Top complaints mined from reviews: Size-Overall, Comfort-Overall, Absorbency. The return rate is 4.2%.
- **When does demand for period underwear for teens peak?**
- Demand peaks in Jan–Aug; the busiest month runs 1.9× the quietest.
- **What does it cost to enter the period underwear for teens niche?**
- Listings span $11.01–$53.28; the average listing price is $22.86 (sweet spot $15–$100). The average incumbent carries 2,891 reviews — the moat a new listing must climb.
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