---
title: "period underwear for women — $2.5M/yr Amazon United States Niche, Score 65/100 - Flapen"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/period-underwear-for-women"
last_updated: "2026-07-20T17:17:14.286Z"
locale: en
meta:
description: "period underwear for women clears our launch bar: a $2.5M/yr market growing +6.6% this quarter with returns at 3.0%. Data updated Jul 2026."
"og:description": "period underwear for women clears our launch bar: a $2.5M/yr market growing +6.6% this quarter with returns at 3.0%. Data updated Jul 2026."
"og:title": "period underwear for women — $2.5M/yr Amazon United States Niche, Score 65/100 - Flapen"
---
# **period underwear for women**
**Launch it**
A $2.5M/yr market growing +6.6% this quarter with returns at 3.0% — clears our launch bar.
Market size 95Growth 33Conversion 17Competition 89Returns 50Price range 85Avg price 95Brand share 75Review moat 25Quality gap 77
**Market size**
**Incredible****$2.5M**
$2.5M/yr · 8.2M searches
**Avg price**
**Incredible****$22.83**
avg listing price — sweet spot $15–$100
**Competition**
**Great****26%**
top-5 click share — an open shelf
**Price range**
**Great****$9.08–$54.90**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Great****4.3★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Great****60%**
top-5 brand share — no brand owns this niche
**Returns**
**Okay****3.0%**
return rate — above 6% kills the launch gate
**Growth**
**Okay****+6.6%**
90-day search growth — must beat 0% to launch
**Review moat**
**Bad****4,614.46**
avg incumbent reviews — the moat a new listing must climb
**Conversion**
**Bad****1.4%**
search→purchase rate — share of searches ending in a sale
According to Flapen's Amazon United States niche tracking, period underwear for women is a $2.5M/yr Amazon United States market (8.2M searches/yr). The top 5 brands hold 60% of demand. Verdict: Launch it — 65/100.
Data updated Jul 13, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **Market data**
- **Units sold / yr**
- **125K–150K**
- avg 1,500–2,000/product
- **Revenue / yr**
- **$2.9M–$3.4M**
- units × avg price
- **Launch success**
- **55%**
- 6 of 11 new (360d)
- **Conversion rate**
- **1.4%**
- **Avg BSR**
- **#117**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **88%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **48 months**
- **Avg seller age**
- **140 days**
## **Competition**
Clicks spread well past the top 5 (26% combined) — an open shelf where new products get seen.
**Brands**
**28 **▲rising
**Sellers**
**54**
**Top-5 brand share**
**60%**
Top 20: 96%
**Top-5 click share**
**26%**
Top 20: 59%
**Open market**
**34%**
- Hanes18% - INNERSY15% - Bambody11% - TIICHOO10% - TANSTC6% - Neione6%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +6.6% search growth over the last 90 days.
250K150KPrime Day '24Holiday '24Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.4×
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/period-underwear-for-women/trend)
## **Product shelf**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%2%$51K4%$101K6%$152K8%$203K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 83 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**TIICHOO Period Underwear for Women Heavy Flow Soft Menstrual Panties Teens Ladies Leakproof Incontinence 5 Pack (1 Black/1 Light Grey/1 Burgundy/1 Rose Gold/1 Turquoise Green Large)**TIICHOO**$37.59**4.4★1,006 rev](https://www.amazon.com/dp/B0CZ3H7RWN) [2**INNERSY Period Underwear for Women High Waisted Leak-Proof Postpartum Menstrual Panties 3-Pack (Dark Vintage Large)**INNERSY**$22.82**4.2★10,005 rev](https://www.amazon.com/dp/B07V7TRP8H) [3**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★12,173 rev](https://www.amazon.com/dp/B0BNP9M6WV) [4**Bambody Absorbent Period Panties - Bamboo Rayon - Period Underwear for Women and Teens - All-Day Long - Overnight Protection Leakproof - Medium 3 Pack Black**Bambody**$35.10**4.4★12,173 rev](https://www.amazon.com/dp/B0BNPCT6DN) [5**YESWEL Period Underwear For Women Leak-Proof Hipster Brief Heavy Flow 3 Pack (Medium Black)**YESWEL**$17.52**4.4★1,583 rev](https://www.amazon.com/dp/B0D1R3CKKF)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**TIICHOO Period Underwear for Women Heavy Flow Menstrual Panties Incontinence Leakproof 7 Pack (Medium 7 Bright)**TIICHOO**$47.40**83 rev5mo ago](https://www.amazon.com/dp/B0GJZDWFS1) [**RFOGJV Period Underwear for Women Teens Leak-Proof Menstrual Cotton Protective Hipster Panties 3 Pack Black L**RFOGJV**$24.16**375 rev5mo ago](https://www.amazon.com/dp/B0F99DCWVN) [**RFOGJV Period Underwear for Women Teens Leak-Proof Menstrual Cotton Protective Hipster Panties 3 Pack Black M**RFOGJV**$24.83**375 rev5mo ago](https://www.amazon.com/dp/B0F99FDMKG) [**RFOGJV Period Underwear for Women Teens Leak-Proof Menstrual Cotton Protective Hipster Panties 3 Pack Dark Color M**RFOGJV**$24.30**375 rev6mo ago](https://www.amazon.com/dp/B0F99C15XH) [**RFOGJV Period Underwear for Women Teens Leak-Proof Menstrual Cotton Protective Hipster Panties 3 Pack Dark Color L**RFOGJV**$24.84**375 rev6mo ago](https://www.amazon.com/dp/B0F99DZ1CW)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Bambody Absorbent Period Panties - Bamboo Rayon - Period Underwear for Women and Teens - All-Day Long - Overnight Protection- Leakproof - Large - 3 Pack: Pink - Blue - Green**Bambody**$36.93**4.4★**▲ 48%**](https://www.amazon.com/dp/B0BNPBFC1G) [**Bambody Absorbent Period Panties - Bamboo Rayon - Period Underwear for Women and Teens - All-Day Long - Overnight Protection - Leakproof - Large - 3 Pack: Black (High Waist)**Bambody**$35.15**4.4★**▲ 48%**](https://www.amazon.com/dp/B0BRQ3L72R) [**Mesachy Period Underwear for Women Heavy Flow High Absorbency Panties High Waisted Menstrual Leakproof Postpartum Briefs**Mesachy**$11.85**4.2★**▲ 48%**](https://www.amazon.com/dp/B0F327MLT2) [**RFOGJV Period Underwear for Women Teens Leak-Proof Menstrual Cotton Protective Hipster Panties 3 Pack Dark Color M**RFOGJV**$24.30**4.4★**▲ 47%**](https://www.amazon.com/dp/B0F99C15XH) [**RFOGJV Period Underwear for Women Teens Leak-Proof Menstrual Cotton Protective Hipster Panties 3 Pack Black L**RFOGJV**$24.16**4.4★**▲ 47%**](https://www.amazon.com/dp/B0F99DCWVN)
**~~View all trending →~~**
## **Reviews**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Comfort-Overall**29%
*“Comfortable for”*
**Size-Overall**14%
*“fit like a glove”*
**Quality-Overall**9%
*“These pants are so good quality”*
**Soft Feel**5%
*“are a soft comfortable material”*
**Value For Money**4%
*“Worth every penny”*
**Material Quality**3%
*“very comfortable soft material”*
**Absorbency**3%
*“Good absorption”*
**Stretchability/Expandability/Elasticity**2%
*“Good amount of stretch”*
**Advertised Vs Actual Product**2%
*“Exactly what i need”*
**Washability**2%
*“easy to wash”*
### **What buyers complain about **
**Size-Overall**19%
*“Didn't fit”*
**Comfort-Overall**9%
*“Not comfortable”*
**Absorbency**7%
*“Low absorbency”*
**Smell**4%
*“Smell is weird”*
**Thickness**4%
*“Other brands are thinner or sports fabric”*
**Stitch/Finish/Polish**3%
*“Bad seams”*
**Quality-Overall**3%
*“not good for what they were made for”*
**Stretchability/Expandability/Elasticity**3%
*“had very little stretch or give to it at all”*
**Value For Money**2%
*“Very expensive”*
**Material Quality**2%
*“Material rough and uncomfortable”*
### **Top return reasons **
**Size-Overall**57%
**Waist Fit**7%
**Material Quality**6%
**Thigh Fit**5%
**Advertised Vs Actual Product**4%
**Comfort-Overall**3%
**Thin**2%
**Value For Money**2%
**Length**1%
**Absorbency**1%
## **Common questions**
- **Is period underwear for women profitable to sell on Amazon United States?**
- The niche generates $2.5M/yr across 83 tracked products. 6 of 11 products launched in the last 360 days are still selling. 90-day search growth is +6.6%. Flapen's verdict: Launch it (65/100).
- **How competitive is the period underwear for women niche?**
- 28 brands and 54 sellers compete. The top 5 products take 26% of clicks and top 5 brands hold 60% of demand.
- **What do buyers complain about in period underwear for women?**
- Top complaints mined from reviews: Size-Overall, Comfort-Overall, Absorbency. The return rate is 3.0%.
- **When does demand for period underwear for women peak?**
- Demand is steady year-round — the busiest month runs 1.4× the quietest.
- **What does it cost to enter the period underwear for women niche?**
- Listings span $9.08–$54.90; the average listing price is $22.83 (sweet spot $15–$100). The average incumbent carries 4,614 reviews — the moat a new listing must climb.
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