period underwear for teens
Skip itSoft demand (-5.8% this quarter) — this niche doesn't clear our bar today.
Avg price
Incredible$22.86avg listing price — sweet spot $15–$100
Price range
Great$11.01–$53.28cheapest to priciest tracked listing — scored on the share inside $15–$100
Market size
Good$715K$715K/yr · 1.2M searches
Competition
Okay56%top-5 click share — leaders hold, buyers still browse
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Brand share
Okay84%top-5 brand share — brands hold most of the demand
Review moat
Okay2,891.38avg incumbent reviews — the moat a new listing must climb
Returns
Okay4.2%return rate — above 5% kills the launch gate
Conversion
Okay2.6%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
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.Peak months: Jan, Aug · busiest ÷ quietest = 1.9×
Top period underwear for teens search terms
- period underwear for teens596K/yr
- girls period underwear142K/yr
- teen period underwear85K/yr
- period panties for teens99K/yr
- thinx95K/yr
- tween period underwear33K/yr
- teen period panties68K/yr
- period underwear teens11K/yr
- period underwear for teens heavy flow13K/yr
- girl period underwear10K/yr
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.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Demifill Teen Girls Period Panties Juniors First Period Starter Underwear Soft Briefs 12-14Years
Demifill$21.194.4★4,942 rev
Mesachy Teens Girls Period Underwear Kids Period Panties Menstrual Leakproof Protective Underwear for Teens Cotton Briefs
Mesachy$17.764.5★1,468 rev
Nalwort Teen Girls Period Underwear Menstrual Period Panties Leak-Proof Cotton Protective Briefs Pack of 6(Multicolor-5 12-14 Years)
Nalwort$23.514.5★9,095 rev
Mesachy Teens Girls Period Underwear Kids Period Panties Menstrual Leakproof Protective Underwear for Teens Cotton Briefs
Mesachy$21.424.5★1,468 rev
Hanes Girls Hipster Period Underwear Comfort Period. Panties Moderate Protection 6-Pack
Hanes$20.484.4★1,146 rev
Newest
by launch date
Musort Period Underwear for Teens Heavy Flow High Absorbency Girls Menstrual Panties Cotton Leakproof Protective Briefs
Musort$11.01187 rev
TIICHOO Period Panties for Teens Seamless Menstrual Leakproof Underwear for Girls 5-Pack(10-12 Years 2 Black/Beige/Pink/Green)
TIICHOO$35.0769 rev
INNERSY Girls Period Underwear for Teens Heavy Flow Panties Size 10-18 Hold 4 Tampons 3-Pack(L(12-14 yrs) Solid Black)
INNERSY$22.8494 rev
Geronmine Teen Girls Period Panties Heavy Flow High Absorbency First Period Starter Underwear For Teens Menstrual Leakproof Protective Cotton Soft Briefs
Geronmine$13.66529 rev
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$53.28519 rev
Trending
90-day click momentumThinx 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$53.284.6★
INNERSY Period Underwear for Teens Girls Cotton Leak-Proof Menstrual Panties 3-Pack(Refreshing Blue Pink Polka Dots L(12-14 yrs))
INNERSY$18.634.6★
Bambody Absorbent Period Panties - Bamboo Rayon - Period Underwear for Women and Teens - All-Day Long - Overnight Protection- Leakproof - Large - 3 Pack: Black
Bambody$34.084.4★
Demifill Teen Girls Period Underwear Cotton Soft Women Panties For Teens Briefs S Black
Demifill$14.734.4★
Mesachy Teens Girls Period Underwear Kids Period Panties Menstrual Leakproof Protective Underwear for Teens Cotton Briefs
Mesachy$21.424.5★
What buyers say about period underwear for teens
What buyers praise and complain about, mined from review topics.What buyers love
“Super comfortable”
“True to size and description”
“Super well made”
“Theyre nice and soft”
“wash well too”
“Worth it”
“Nice and thick”
“it does everything advertised”
“Cute colors”
“Absorbs great and feels amazing”
What buyers complain about
“The fit is awful”
“Not comfortable”
“NOT ABSORBENT”
“Do not work”
“A little thicker than normal underwear”
“didnt even last 3 hours”
“False advertising”
“Poor quality material”
“I expected more for the price”
“cause chafing on my daughter's skin”
Top return reasons
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.