thinx period underwear for teen girls
Skip itSoft demand (-4.1% this quarter) — this niche doesn't clear our bar today.
Avg price
Incredible$25.72avg listing price — sweet spot $15–$100
Price range
Great$11.01–$53.89cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Great38%top-5 click share — an open shelf
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Review moat
Okay1,740.36avg incumbent reviews — the moat a new listing must climb
Brand share
Okay86%top-5 brand share — brands hold most of the demand
Returns
Okay4.5%return rate — above 5% kills the launch gate
Conversion
Okay2.1%search→purchase rate — share of searches ending in a sale
Market size
Bad$98K$98K/yr · 186K searches
Growth
Bad-4.1%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, thinx period underwear for teen girls is a $98K/yr Amazon United States market (186K searches/yr). The top 5 brands hold 86% of demand. Demand peaks in Mar–Nov. Verdict: Skip it — 44/100.
Data updated Jul 11, 2026 · scored weekly · How we score niches
thinx period underwear for teen girls market data
- Units sold / yr
- 5K–6K
- avg 100–250/product
- Revenue / yr
- $129K–$154K
- units × avg price
- Conversion rate
- 2.1%
- Avg BSR
- #97
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 87%
- Out of stock
- 5.6%
- Avg brand age
- 40 months
- Avg seller age
- 170 days
Competition & brand share
Clicks spread well past the top 5 (38% combined) — an open shelf where new products get seen.Brands
13 rising
Sellers
20
Top-5 brand share
86%
Top 20: 100%
Top-5 click share
38%
Top 20: 75%
Open market
10%
- Hanes26%
- Thinx Teens24%
- Demifill19%
- Mesachy13%
- Nalwort4%
- INNERSY4%
- Open — no brand owns it (7 brands, 10%)
Demand & seasonality
Weekly Amazon search volume, last 66 weeks — -4.1% search growth over the last 90 days.Peak months: Mar, Nov · busiest ÷ quietest = 2.7×
Top thinx period underwear for teen girls search terms
- thinx teen period underwear44K/yr
- hanes period underwear for teens17K/yr
- hanes girls period underwear8K/yr
- thinx teen11K/yr
- period underwear for girls 10-1210K/yr
- girls period underwear size 10-1212K/yr
- kids period underwear8K/yr
- period panties for girls 10-1219K/yr
- period under wear for teens5K/yr
- thinx period underwear for teen girls8K/yr
Top thinx period underwear for teen girls 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
Hanes Girls Hipster Period Underwear Comfort Period. Panties Moderate Protection 6-Pack
Hanes$20.514.4★1,146 rev
Hanes Girls Period Underwear Comfort Period. Hipster Panty Moderate Protection Period Panties 4-Pack
Hanes$13.434.6★2,786 rev
Thinx Teens Period Underwear Brief-Style Period Panties for Teens Holds Up to Regular 12 Tampons* Period Panties Reusable 3-Pack - (2) Black + (1) Hot Pink Size 15/16
Thinx Teens$52.764.6★519 rev
Newest
by launch date
Thinx Teens Period Underwear Bikini-Style Period Panties for Teens Holds Up to 12 Regular Tampons Leakproof Reusble and Controls Odor Desert Camo X-Large
Thinx Teens$18.062 rev
Thinx Teens Period Underwear Overnight Boyshort Period Panties for Teens Holds Up to 12 Regular Tampons Leakproof Reusble and Controls Odor Black Large
Thinx Teens$28.451 rev
Thinx Teens Period Underwear Bikini-Style Period Panties for Teens Holds Up to 12 Regular Tampons Leakproof Reusble and Controls Odor Desert Camo Medium
Thinx Teens$17.822 rev
Hanes Girls Period Underwear Boxer Briefs Comfort Period Boxer Brief Panties for Girls Moderate Protection
Hanes$24.761,146 rev
Hanes Girls Period Underwear Boxer Briefs Comfort Period Boxer Brief Panties for Girls Moderate Protection
Hanes$24.251,146 rev
Trending
90-day click momentumThinx Teens Period Underwear Bikini-Style Period Panties for Teens Holds Up to 12 Regular Tampons Leakproof Reusble and Controls Odor Desert Camo X-Large
Thinx Teens$18.065.0★
Thinx Teens Period Underwear Bikini-Style Period Panties for Teens Holds Up to 12 Regular Tampons Leakproof Reusble and Controls Odor Desert Camo Medium
Thinx Teens$17.825.0★
Thinx Teens Period Underwear Overnight Boyshort Period Panties for Teens Holds Up to 12 Regular Tampons Leakproof Reusble and Controls Odor Black Large
Thinx Teens$28.454.0★
Hanes Girls Period Underwear Boxer Briefs Comfort Period Boxer Brief Panties for Girls Moderate Protection
Hanes$24.254.4★
Hanes Girls Period Underwear Boxer Briefs Comfort Period Boxer Brief Panties for Girls Moderate Protection
Hanes$24.764.4★
What buyers say about thinx period underwear for teen girls
What buyers praise and complain about, mined from review topics.What buyers love
“Super comfortable”
“These panties are very well made”
“True to size and description”
“wash well too”
“Worth it”
“Nice and thick”
“Value & Softness”
“Cute colors”
“I love the material”
“the design is cute”
What buyers complain about
“Sizing is tricky”
“Not comfortable”
“NOT ABSORBENT”
“Do not work”
“False advertising”
“A little thicker than normal underwear”
“I expected more for the price”
“Poor quality material”
“cause chafing on my daughter's skin”
“Cheaply made”
Top return reasons
Common questions
- Is thinx period underwear for teen girls profitable to sell on Amazon United States?
- The niche generates $98K/yr across 47 tracked products. 2 of 7 products launched in the last 360 days are still selling. 90-day search growth is -4.1%. Flapen's verdict: Skip it (44/100).
- How competitive is the thinx period underwear for teen girls niche?
- 13 brands and 20 sellers compete. The top 5 products take 38% of clicks and top 5 brands hold 86% of demand.
- What do buyers complain about in thinx period underwear for teen girls?
- Top complaints mined from reviews: Size-Overall, Comfort-Overall, Absorbency. The return rate is 4.5%.
- When does demand for thinx period underwear for teen girls peak?
- Demand peaks in Mar–Nov; the busiest month runs 2.7× the quietest.
- What does it cost to enter the thinx period underwear for teen girls niche?
- Listings span $11.01–$53.89; the average listing price is $25.72 (sweet spot $15–$100). The average incumbent carries 1,740 reviews — the moat a new listing must climb.