---
title: "Swim Bras for Under Rash Shirt — $32K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/swim-bras-for-under-rash-shirt"
last_updated: "2026-08-09T23:31:47.107Z"
locale: en
meta:
description: "Niche score 57/100 · $32K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 57/100 · $32K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Swim Bras for Under Rash Shirt — $32K/yr Amazon US Niche (2026) - Flapen"
---
# **swim bras for under rash shirt**
**Worth a look**
Shows demand growing +122.9% this quarter, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 8Growth 95Conversion 8Competition 93Returns 8Price range 75Avg price 91Brand share 84Review moat 28Quality gap 80
**Growth**
**Incredible****+122.9%**
90-day search growth — must beat 0% to launch
**Competition**
**Great****22%**
top-5 click share — an open shelf
**Avg price**
**Great****$21.32**
avg listing price — sweet spot $15–$100
**Brand share**
**Great****51%**
top-5 brand share — no brand owns this niche
**Quality gap**
**Great****4.2★**
avg incumbent rating — lower means beatable quality
**Price range**
**Great****$7.91–$36.99**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Review moat**
**Okay****3,676.02**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Bad****$32K**
$32K/yr · 240K searches
**Conversion**
**Bad****0.6%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Bad****9.7%**
return rate — above 5% kills the launch gate
**Signals**[** Trending**](https://flapen.com/research/niches?market=us&signal=trending "Search growth > 100% (90d)") [** No Dominant Brand**](https://flapen.com/research/niches?market=us&signal=no_dominant_brand "Top brand's click share < 20%") [** High Returns**](https://flapen.com/research/niches?market=us&signal=high_returns "Return rate > 5%")
According to Flapen's Amazon United States niche tracking, swim bras for under rash shirt is a $32K/yr Amazon United States market (240K searches/yr). The top 5 brands hold 51% of demand. Demand peaks in May–Jun–Jul. Verdict: Worth a look — 57/100.
Data updated Jul 13, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **swim bras for under rash shirt market data**
- **Units sold / yr**
- **2K–2K**
- avg 0–100/product
- **Revenue / yr**
- **$32K–$43K**
- units × avg price
- **Conversion rate**
- **0.6%**
- **Avg BSR**
- **#182**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **97%**
- **Out of stock**
- **0.4%**
- **Avg brand age**
- **38 months**
- **Avg seller age**
- **148 days**
## **Competition & brand share**
Clicks spread well past the top 5 (22% combined) — an open shelf where new products get seen.
**Brands**
**49 **▲rising
**Sellers**
**65**
**Top-5 brand share**
**51%**
Top 20: 84%
**Top-5 click share**
**22%**
Top 20: 52%
**Open market**
**43%**
- American Trends14% - Daci12% - Tempt Me9% - MIVEI9% - Danga bay6% - Holipick6%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +122.9% search growth over the last 90 days.
15K10KSpike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: May, Jun, Jul · busiest ÷ quietest = 7.5×
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/swim-bras-for-under-rash-shirt/trend)
## **Top swim bras for under rash shirt search terms**
- **swim bra for under swim shirt**88K/yr+119.0%0.6% conv. - **swim bra plus size**21K/yr+109.1%0.4% conv. - **swim bras for under swimsuits**17K/yr+72.6%0.4% conv. - **swimming bras to wear under bathing suit**13K/yr+169.2%0.5% conv. - **plus size swim bra**17K/yr+123.5%0.3% conv. - **swim sports bras for women**12K/yr+160.3%0.5% conv. - **swim bra for under rash guard**8K/yr+258.0%0.4% conv. - **sports bra bikini**8K/yr+150.7%0.0% conv. - **swimming sports bra**7K/yr+162.0%0.4% conv. - **bra for swimsuit**6K/yr+155.0%0.3% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/swim-bras-for-under-rash-shirt/search-terms)
## **Top swim bras for under rash shirt 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%2%$6444%$1K6%$2K8%$3K101001K10K100K 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**Tempt Me Women Black Sports Bra Bikini Tops Scoop Neck Bathing Suits Top Padded Swim Crop Tops Only M**Tempt Me**$22.46**4.5★889 rev](https://www.amazon.com/dp/B0CDCDYDJB) [2**MIVEI Womens Sports Bra Swim Tops for Under Shirt Bikini Top Bathing Suit Modest High Neck Quick Dry Removable Padded UPF50+ Black**MIVEI**$21.48**4.0★469 rev](https://www.amazon.com/dp/B0C9M4CHVQ) [3**American Trends Womens Classic White Bikini Top with Padded Crop Swimsuit Top Only White M**American Trends**$18.54**4.3★185 rev](https://www.amazon.com/dp/B0DNPYDHNT) [4**Women Sport Bra Swimsuit Top - Swim Bra Bikini Top Only Scoop Neck Bathing Suit 2025 Swimwear Black**Yonique**$24.12**4.3★442 rev](https://www.amazon.com/dp/B0DJP957XL) [5**2026 Fashion Sports Swim Bra Classic Bikini Tops for Women Bathing Suits Top with Padded Crop Swimsuit Black M**American Trends**$17.70**4.4★95 rev](https://www.amazon.com/dp/B0FXLSXTGK)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**LetsJoli Jelly Bras for Women Push Up Bra Wireless No Underwire Supportive Full Coverage Plus Size for Older Women(Leopard Pink L)**LetsJoli**$19.62**16,468 rev5mo ago](https://www.amazon.com/dp/B0GHMW9L53) [**Women Crop Swim Bra for Under Swim Shirt Bikini Tops Bathing Suit Sports Tops Only Swimsuits Navy**Danga bay**$15.53**34 rev7mo ago](https://www.amazon.com/dp/B0G2KXW71L) [**Aderea Womens Plus Size Swim Tops Sports Bra Bikini Top Push Up Swim Bra Black Swimsuit Tops Zip Front Bathing Suit Top Only**Aderea**$14.84**170 rev8mo ago](https://www.amazon.com/dp/B0FZKGDXGW) [**Womens Black Bikini Top Fashion Swim Bra Comfortable Supportive Swimsuit Top for Swimming Beach Yoga L**American Trends**$16.35**34 rev8mo ago](https://www.amazon.com/dp/B0FZBMXQMF) [**2026 Fashion Sports Swim Bra Classic Bikini Tops for Women Bathing Suits Top with Padded Crop Swimsuit Black M**American Trends**$17.70**95 rev8mo ago](https://www.amazon.com/dp/B0FXLSXTGK)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**LetsJoli Jelly Bras for Women Push Up Bra Wireless No Underwire Supportive Full Coverage Plus Size for Older Women(Leopard Pink L)**LetsJoli**$19.62**4.1★**▲ 22%**](https://www.amazon.com/dp/B0GHMW9L53) [**Tmeefee Adjustable Sports Bras for Women High Support Padded Racerback Bra**Tmeefee**$26.37**4.4★**▲ 22%**](https://www.amazon.com/dp/B0FFVYHRKT) [**Daci Women Plus Size Sports Bra Bikini Top Only Push Up Scoop Neck Swim Top Full Coverage Bathing Suit for Large Bust Black 20 Plus**Daci**$24.92**4.4★**▲ 21%**](https://www.amazon.com/dp/B0CYH9XZW7) [**Aderea Womens Plus Size Swim Tops Sports Bra Bikini Top Push Up Swim Bra Black Swimsuit Tops Zip Front Bathing Suit Top Only**Aderea**$14.84**4.2★**▲ 20%**](https://www.amazon.com/dp/B0FZKGDXGW) [**Tempt Me Women Blue Leaves Sports Bra Bikini Tops Scoop Neck Bathing Suits Top Padded Swim Crop Tops Only M**Tempt Me**$24.78**4.5★**▲ 19%**](https://www.amazon.com/dp/B0FF4J84N4)
**~~View all trending →~~**
## **What buyers say about swim bras for under rash shirt**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Comfort-Overall**29%
*“Comfortable and lightweight”*
**Size-Overall**18%
*“Fit like a glove”*
**Adhesion/Stickiness**7%
*“Very good adhesion”*
**Quality-Overall**6%
*“Versatile and Great Quality Set”*
**Soft Feel**5%
*“buttery soft”*
**Value For Money**3%
*“Great Value”*
**Strap/String Quality**2%
*“Straps are comfortable”*
**Material Quality**2%
*“Awesome material”*
**Shape/Style**2%
*“Very flattering”*
**Color**2%
*“vibrant colors”*
### **What buyers complain about **
**Size-Overall**24%
*“Doesn't fit”*
**Adhesion/Stickiness**8%
*“Terrible Adhesion”*
**Comfort-Overall**5%
*“I find this bra uncomfortable”*
**Strap/String Quality**4%
*“My back strap broke off completely”*
**Quality-Overall**4%
*“Not well made”*
**Durability**4%
*“Broke”*
**Chest Fit**3%
*“not for large busts”*
**Advertised Vs Actual Product**2%
*“Not as described”*
**Shape/Style**2%
*“is not flattering”*
**Value For Money**2%
*“Not worth the price”*
### **Top return reasons **
**Size-Overall**57%
**Chest Fit**18%
**Adhesion/Stickiness**5%
**Advertised Vs Actual Product**3%
**Comfort-Overall**2%
**Shape/Style**2%
**Functionality-Overall**2%
**Material Quality**2%
**Color**1%
**Cushion**1%
## **Common questions**
- **Is swim bras for under rash shirt profitable to sell on Amazon United States?**
- The niche generates $32K/yr across 116 tracked products. 9 of 28 products launched in the last 360 days are still selling. 90-day search growth is +122.9%. Flapen's verdict: Worth a look (57/100).
- **How competitive is the swim bras for under rash shirt niche?**
- 49 brands and 65 sellers compete. The top 5 products take 22% of clicks and top 5 brands hold 51% of demand.
- **What do buyers complain about in swim bras for under rash shirt?**
- Top complaints mined from reviews: Size-Overall, Adhesion/Stickiness, Comfort-Overall. The return rate is 9.7% — above our launch gate.
- **When does demand for swim bras for under rash shirt peak?**
- Demand peaks in May–Jun–Jul; the busiest month runs 7.5× the quietest.
- **What does it cost to enter the swim bras for under rash shirt niche?**
- Listings span $7.91–$36.99; the average listing price is $21.32 (sweet spot $15–$100). The average incumbent carries 3,676 reviews — the moat a new listing must climb.
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