swim bras for under rash shirt
Worth a lookShows demand growing +122.9% this quarter, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Growth
Incredible+122.9%90-day search growth — must beat 0% to launch
Competition
Great22%top-5 click share — an open shelf
Avg price
Great$21.32avg listing price — sweet spot $15–$100
Brand share
Great51%top-5 brand share — no brand owns this niche
Quality gap
Great4.2★avg incumbent rating — lower means beatable quality
Price range
Great$7.91–$36.99cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Okay3,676.02avg incumbent reviews — the moat a new listing must climb
Market size
Bad$32K$32K/yr · 240K searches
Conversion
Bad0.6%search→purchase rate — share of searches ending in a sale
Returns
Bad9.7%return rate — above 5% kills the launch gate
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
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.Peak months: May, Jun, Jul · busiest ÷ quietest = 7.5×
Top swim bras for under rash shirt search terms
- swim bra for under swim shirt88K/yr
- swim bra plus size21K/yr
- swim bras for under swimsuits17K/yr
- swimming bras to wear under bathing suit13K/yr
- plus size swim bra17K/yr
- swim sports bras for women12K/yr
- swim bra for under rash guard8K/yr
- sports bra bikini8K/yr
- swimming sports bra7K/yr
- bra for swimsuit6K/yr
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.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Tempt Me Women Black Sports Bra Bikini Tops Scoop Neck Bathing Suits Top Padded Swim Crop Tops Only M
Tempt Me$22.464.5★889 rev
MIVEI Womens Sports Bra Swim Tops for Under Shirt Bikini Top Bathing Suit Modest High Neck Quick Dry Removable Padded UPF50+ Black
MIVEI$21.484.0★469 rev
American Trends Womens Classic White Bikini Top with Padded Crop Swimsuit Top Only White M
American Trends$18.544.3★185 rev
Women Sport Bra Swimsuit Top - Swim Bra Bikini Top Only Scoop Neck Bathing Suit 2025 Swimwear Black
Yonique$24.124.3★442 rev
2026 Fashion Sports Swim Bra Classic Bikini Tops for Women Bathing Suits Top with Padded Crop Swimsuit Black M
American Trends$17.704.4★95 rev
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$19.6216,468 rev
Women Crop Swim Bra for Under Swim Shirt Bikini Tops Bathing Suit Sports Tops Only Swimsuits Navy
Danga bay$15.5334 rev
Aderea Womens Plus Size Swim Tops Sports Bra Bikini Top Push Up Swim Bra Black Swimsuit Tops Zip Front Bathing Suit Top Only
Aderea$14.84170 rev
Womens Black Bikini Top Fashion Swim Bra Comfortable Supportive Swimsuit Top for Swimming Beach Yoga L
American Trends$16.3534 rev
2026 Fashion Sports Swim Bra Classic Bikini Tops for Women Bathing Suits Top with Padded Crop Swimsuit Black M
American Trends$17.7095 rev
Trending
90-day click momentumLetsJoli Jelly Bras for Women Push Up Bra Wireless No Underwire Supportive Full Coverage Plus Size for Older Women(Leopard Pink L)
LetsJoli$19.624.1★
Tmeefee Adjustable Sports Bras for Women High Support Padded Racerback Bra
Tmeefee$26.374.4★
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$24.924.4★
Aderea Womens Plus Size Swim Tops Sports Bra Bikini Top Push Up Swim Bra Black Swimsuit Tops Zip Front Bathing Suit Top Only
Aderea$14.844.2★
Tempt Me Women Blue Leaves Sports Bra Bikini Tops Scoop Neck Bathing Suits Top Padded Swim Crop Tops Only M
Tempt Me$24.784.5★
What buyers say about swim bras for under rash shirt
What buyers praise and complain about, mined from review topics.What buyers love
“Comfortable and lightweight”
“Fit like a glove”
“Very good adhesion”
“Versatile and Great Quality Set”
“buttery soft”
“Great Value”
“Straps are comfortable”
“Awesome material”
“Very flattering”
“vibrant colors”
What buyers complain about
“Doesn't fit”
“Terrible Adhesion”
“I find this bra uncomfortable”
“My back strap broke off completely”
“Not well made”
“Broke”
“not for large busts”
“Not as described”
“is not flattering”
“Not worth the price”
Top return reasons
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.