---
title: "Workout Underwear — $69K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/workout-underwear"
last_updated: "2026-08-10T18:41:57.831Z"
locale: en
meta:
description: "Niche score 45/100 · $69K/yr market · 208K searches/yr · $21.89 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 45/100 · $69K/yr market · 208K searches/yr · $21.89 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Workout Underwear — $69K/yr Amazon US Niche (2026) - Flapen"
---
# **workout underwear**
**Skip it**
A small market ($69K/yr) — this niche doesn't clear our bar today.
Market size 17Growth 23Conversion 19Competition 88Returns 49Price range 78Avg price 92Brand share 34Review moat 22Quality gap 58
**Avg price**
**Great****$21.89**
avg listing price — sweet spot $15–$100
**Competition**
**Great****27%**
top-5 click share — an open shelf
**Price range**
**Great****$9.48–$36.23**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Returns**
**Okay****3.0%**
return rate — above 5% kills the launch gate
**Brand share**
**Okay****85%**
top-5 brand share — brands hold most of the demand
**Growth**
**Bad****-3.5%**
90-day search growth — must beat 0% to launch
**Review moat**
**Bad****9,063.61**
avg incumbent reviews — the moat a new listing must climb
**Conversion**
**Bad****1.5%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Bad****$69K**
$69K/yr · 208K searches
According to Flapen's Amazon United States niche tracking, workout underwear is a $69K/yr Amazon United States market (208K searches/yr). The top 5 brands hold 85% of demand. Verdict: Skip it — 45/100.
Data updated Jul 13, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **workout underwear market data**
- **Units sold / yr**
- **3K–4K**
- avg 0–100/product
- **Revenue / yr**
- **$66K–$88K**
- units × avg price
- **Conversion rate**
- **1.5%**
- **Avg BSR**
- **#71**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **93%**
- **Out of stock**
- **0.7%**
- **Avg brand age**
- **40 months**
- **Avg seller age**
- **150 days**
## **Competition & brand share**
Clicks spread well past the top 5 (27% combined) — an open shelf where new products get seen.
**Brands**
**19 **▲rising
**Sellers**
**73**
**Top-5 brand share**
**85%**
Top 20: 100%
**Top-5 click share**
**27%**
Top 20: 61%
**Open market**
**12%**
- Under Armour50% - voenxe16% - GRANKEE9% - Reebok5% - BAMBOO COOL4% - SHARICCA3% - Open — no brand owns it (13 brands, 12%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -3.5% search growth over the last 90 days.
10K6KPrime Day '24Spike '24Holiday '24Prime Day '25Black Friday '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.5×
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/workout-underwear/trend)
## **Top workout underwear search terms**
- **workout thongs for women**33K/yr-23.9%1.3% conv. - **under armour underwear women**32K/yr+7.6%1.8% conv. - **adidas underwear for women**17K/yr-6.1%0.2% conv. - **ambar activewear underwear**7K/yr+30.5%0.2% conv. - **under armour womens underwear**12K/yr+13.8%1.6% conv. - **underarmour underwear for women**12K/yr+11.1%1.5% conv. - **under armour thongs for women**11K/yr+9.5%2.9% conv. - **new balance underwear women**12K/yr-12.4%0.2% conv. - **womens running underwear**7K/yr+5.1%1.1% conv. - **running underwear women**6K/yr+30.3%0.3% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/workout-underwear/search-terms)
## **Top workout underwear 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%3%$2K6%$4K9%$6K12%$8K1001K10K100K 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**voenxe Seamless Women Underwear Thongs No Show Ladies Thong Invisible No Line Breathable Comfortable Panties Undies Womens No Seam Soft Wide Gusset Tanga Legging Underpants for Woman 5-Pack**voenxe**$13.48**4.6★72,407 rev](https://www.amazon.com/dp/B081VSYKL5) [2**Under Armour Womens 3-pack Pure Stretch No Show Thong Underwear All-day Comfort Fit & Ultra-soft Black Solid Medium**Under Armour**$27.25**4.6★361 rev](https://www.amazon.com/dp/B0C292YKFC) [3**Under Armour Womens 3-pack Pure Stretch No Show Hipster Underwear All-day Comfort Fit & Ultra-soft Shaded Fuchsia X-Small**Under Armour**$22.52**4.3★518 rev](https://www.amazon.com/dp/B0D3WP5FZX) [4**Under Armour Womens 3-pack Pure Stretch No Show Bikini Underwear All-day Comfort Fit & Ultra-soft Rebel Pink Small**Under Armour**$24.01**4.0★262 rev](https://www.amazon.com/dp/B0D3WKBVJN) [5**GRANKEE Womens High Waisted Breathable Seamless Thong Panties No Show Workout Underwear Comfortable Cotton Crotch 6 Pack(Summer 6 pack L)**GRANKEE**$24.05**4.6★26,410 rev](https://www.amazon.com/dp/B0B4S3R7QM)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Reebok Womens Hipster Panties 5 Pack Soft Stretch Underwear for Women**Reebok**$20.59**6,390 rev1y ago](https://www.amazon.com/dp/B0F9QGJD75) [**EclatBling Seamless Workout Thongs for Women - No Show Womens Underwear with Wide Gusset Invisible Panties Nude&Black 2 Pack**EclatBling**$10.91**282 rev1y ago](https://www.amazon.com/dp/B0F6YB92TQ) [**Under Armour Womens 3-pack Pure Stretch No Show Hipster Underwear All-day Comfort Fit & Ultra-soft Tourmaline Pink Small**Under Armour**$24.17**518 rev1y ago](https://www.amazon.com/dp/B0DMXTW94D) [**Under Armour Womens 3-pack Pure Stretch No Show Hipster Underwear All-day Comfort Fit & Ultra-soft Shaded Fuchsia X-Small**Under Armour**$22.52**518 rev2y ago](https://www.amazon.com/dp/B0D3WP5FZX) [**Under Armour Womens 3-pack Pure Stretch No Show Bikini Underwear All-day Comfort Fit & Ultra-soft Rebel Pink Small**Under Armour**$24.01**262 rev2y ago](https://www.amazon.com/dp/B0D3WKBVJN)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Under Armour Womens 3-pack Pure Stretch No Show Hipster Underwear All-day Comfort Fit & Ultra-soft Tourmaline Pink Small**Under Armour**$24.17**4.3★**▲ 62%**](https://www.amazon.com/dp/B0DMXTW94D) [**Under Armour Womens 3-pack Pure Stretch No Show Bikini Underwear All-day Comfort Fit & Ultra-soft Canyon Pink Medium**Under Armour**$27.66**4.0★**▲ 62%**](https://www.amazon.com/dp/B0D3WQDS4T) [**Under Armour Womens 3-pack Pure Stretch No Show Thong Underwear All-day Comfort Fit & Ultra-soft Gray Dawn Small**Under Armour**$23.69**4.6★**▲ 58%**](https://www.amazon.com/dp/B0D3WFZJCB) [**Under Armour Womens 3-pack Pure Stretch No Show Hipster Underwear All-day Comfort Fit & Ultra-soft Black Solid X-Large**Under Armour**$23.96**4.3★**▲ 51%**](https://www.amazon.com/dp/B0C28WK2H8) [**Under Armour Womens 3-pack Pure Stretch No Show Hipster Underwear All-day Comfort Fit & Ultra-soft Shaded Fuchsia X-Small**Under Armour**$22.52**4.3★**▲ 51%**](https://www.amazon.com/dp/B0D3WP5FZX)
**~~View all trending →~~**
## **What buyers say about workout underwear**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Comfort-Overall**30%
*“Get these and stay comfy all day”*
**Size-Overall**14%
*“These fit smooth”*
**Soft Feel**9%
*“Really soft”*
**Quality-Overall**7%
*“true to size, great quality”*
**Material Quality**5%
*“Material is soft”*
**Value For Money**4%
*“Great value”*
**Breathability**4%
*“Comfortable and breathable”*
**Stretchability/Expandability/Elasticity**3%
*“Comfortable stretch”*
**Color**2%
*“The colors are beautiful”*
**Advertised Vs Actual Product**2%
*“As advertised”*
### **What buyers complain about **
**Size-Overall**21%
*“longer than expected”*
**Thickness**6%
*“the gusset was so thick you could see it through my pants”*
**Quality-Overall**6%
*“Cheaply made”*
**Material Quality**5%
*“The material were not good”*
**Comfort-Overall**5%
*“So uncomfortable”*
**Stretchability/Expandability/Elasticity**4%
*“They dont stretch as much as I would like so I would size up”*
**Durability**3%
*“Falling apart”*
**Advertised Vs Actual Product**2%
*“Not as described”*
**Stitch/Finish/Polish**2%
*“Bad seams”*
**Adhesion/Stickiness**2%
*“a pad doesn't even stick to it”*
### **Top return reasons **
**Size-Overall**47%
**Material Quality**14%
**Waist Fit**13%
**Advertised Vs Actual Product**4%
**Thin**3%
**Length**2%
**Hip Fit**2%
**Comfort-Overall**2%
**Shape/Style**2%
**Thigh Fit**1%
## **Common questions**
- **Is workout underwear profitable to sell on Amazon United States?**
- The niche generates $69K/yr across 69 tracked products. 3 of 4 products launched in the last 360 days are still selling. 90-day search growth is -3.5%. Flapen's verdict: Skip it (45/100).
- **How competitive is the workout underwear niche?**
- 19 brands and 73 sellers compete. The top 5 products take 27% of clicks and top 5 brands hold 85% of demand.
- **What do buyers complain about in workout underwear?**
- Top complaints mined from reviews: Size-Overall, Thickness, Quality-Overall. The return rate is 3.0%.
- **When does demand for workout underwear peak?**
- Demand is steady year-round — the busiest month runs 1.5× the quietest.
- **What does it cost to enter the workout underwear niche?**
- Listings span $9.48–$36.23; the average listing price is $21.89 (sweet spot $15–$100). The average incumbent carries 9,064 reviews — the moat a new listing must climb.
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