black one piece
Worth a lookShows a fragmented shelf (top 5 take 8% of clicks), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Competition
Incredible8%top-5 click share — an open shelf
Brand share
Incredible36%top-5 brand share — no brand owns this niche
Avg price
Incredible$32.09avg listing price — sweet spot $15–$100
Price range
Great$7.21–$98.48cheapest to priciest tracked listing — scored on the share inside $15–$100
Growth
Great+70.5%90-day search growth — must beat 0% to launch
Quality gap
Great4.3★avg incumbent rating — lower means beatable quality
Review moat
Good1,476.59avg incumbent reviews — the moat a new listing must climb
Market size
Okay$100K$100K/yr · 1.0M searches
Conversion
Bad0.3%search→purchase rate — share of searches ending in a sale
Returns
Bad14.3%return rate — above 5% kills the launch gate
According to Flapen's Amazon United States niche tracking, black one piece is a $100K/yr Amazon United States market (1.0M searches/yr). The top 5 brands hold 36% of demand. Demand peaks in May–Jun–Jul. Verdict: Worth a look — 60/100.
Data updated Jul 14, 2026 · scored weekly · How we score niches
black one piece market data
- Units sold / yr
- 3K–3K
- avg 0–100/product
- Revenue / yr
- $80K–$96K
- units × avg price
- Conversion rate
- 0.3%
- Avg BSR
- #670
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 94%
- Out of stock
- 1.4%
- Avg brand age
- 33 months
- Avg seller age
- 158 days
Competition & brand share
Clicks spread well past the top 5 (8% combined) — an open shelf where new products get seen.Brands
101 rising
Sellers
141
Top-5 brand share
36%
Top 20: 69%
Top-5 click share
8%
Top 20: 24%
Open market
63%
- LASLULU8%
- SUUKSESS8%
- Sexybody7%
- HYTENSUN5%
- CUPSHE5%
- KRLAGAPAS4%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +70.5% search growth over the last 90 days.Peak months: May, Jun, Jul · busiest ÷ quietest = 5.3×
Top black one piece search terms
- high cut one piece swimsuit women129K/yr
- one piece swimsuit teen86K/yr
- thong one piece swimsuit117K/yr
- one piece thong swimsuit women123K/yr
- low back one piece swimsuit67K/yr
- high leg one piece swimsuit women56K/yr
- black one piece81K/yr
- sexy one piece55K/yr
- thong one piece swimsuits for women66K/yr
- cheeky one piece swimsuit43K/yr
Top black one piece 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
KRLAGAPAS Womens Black Sexy One Piece Bathing Suit Swimsuit High Cut Cheeky Coverage SW07Black M
KRLAGAPAS$30.653.8★156 rev
Viottiset Womens Ruched High Cut One Piece Swimsuit Tummy Control Cheeky Bathing Suit Black Large
Viottiset$28.824.3★10,026 rev
Daci Womens Black High Cut One Piece Swimsuit - Tummy Control Bathing Suit Sexy Brazilian Swimwear 2026 M
Daci$26.984.5★147 rev
Sexybody Women Sexy One Piece Swimsuit Cheeky Thong Ruched Bathing Suit Tummy Control High Cut Crisscross Swim Suits
Sexybody$28.374.7★21 rev
LASLULU Swim Suits for Women 2026 Beach Wear Bikini Sexy Black One Piece Swimsuit V Neck Padded Full Coverage Vacation Outfits(Black Small)
LASLULU$32.004.3★214 rev
Newest
by launch date
HYTENSUN One Piece Swimsuit for Women Tummy Control Deep V Swim Suits 2026 Backless Cheeky High Cut Thong Bottom Sexy Bathing Suit Cruise Outfit Black M
HYTENSUN$27.7717 rev
HYTENSUN Sexy One Piece Swimsuit for Women Halter Spaghetti Straps Backless Swimwear High Cut Thong Swim Suits 2026 Black XL
HYTENSUN$30.1148 rev
Sexybody Women Sexy One Piece Swimsuit Cheeky Thong Ruched Bathing Suit Tummy Control High Cut Crisscross Swim Suits
Sexybody$28.3721 rev
Sexybody Women Sexy Thong One Piece Swimsuits Cheeky V Neck Bathing Suit Slimming High Cut Backless Swim Suits
Sexybody$31.7571 rev
SUUKSESS Women Sexy One piece Tummy Control Swimsuit Cutout Backless Slimming Swimwear 2025 Cheeky Side O-Ring Bathing Suit (Black Large)
SUUKSESS$35.54227 rev
Trending
90-day click momentumHYTENSUN One Piece Swimsuit for Women Tummy Control Deep V Swim Suits 2026 Backless Cheeky High Cut Thong Bottom Sexy Bathing Suit Cruise Outfit Black M
HYTENSUN$27.774.3★
HYTENSUN Sexy One Piece Swimsuit for Women Halter Spaghetti Straps Backless Swimwear High Cut Thong Swim Suits 2026 Black XL
HYTENSUN$30.114.1★
LASLULU Swim Suits for Women 2026 Beach Wear Bikini Sexy Black One Piece Swimsuit V Neck Padded Full Coverage Vacation Outfits(Black Small)
LASLULU$32.004.3★
LASLULU Women One Piece Swimsuit Tummy Control Bathing Suit Padded Sweetheart Neck Swim Suits with Cutout Tie Black Medium
LASLULU$35.204.5★
RELLECIGA Womens Royal Blue High Cut Low Back One Piece Thong Swimsuit for Women Size Medium
RELLECIGA$23.894.4★
What buyers say about black one piece
What buyers praise and complain about, mined from review topics.What buyers love
“not too tight”
“Super Flattering”
“SO COMFORTABLE”
“This bathing suit is a very good quality”
“Material is comfortable”
“Colors are vibrant”
“Beautiful Design”
“Worth It”
“As described”
“Good stretch”
What buyers complain about
“Too big”
“This bathing suit is poor quality”
“tight fit for my bust”
“the strap broke within 10 minutes of use”
“Color fades fast”
“Awful material”
“Got stretched out”
“They do kind of dig into my skin”
“cut was not flattering”
“did not hold up”
Top return reasons
Common questions
- Is black one piece profitable to sell on Amazon United States?
- The niche generates $100K/yr across 321 tracked products. 44 of 141 products launched in the last 360 days are still selling. 90-day search growth is +70.5%. Flapen's verdict: Worth a look (60/100).
- How competitive is the black one piece niche?
- 101 brands and 141 sellers compete. The top 5 products take 8% of clicks and top 5 brands hold 36% of demand.
- What do buyers complain about in black one piece?
- Top complaints mined from reviews: Size-Overall, Quality-Overall, Chest Fit. The return rate is 14.3% — above our launch gate.
- When does demand for black one piece peak?
- Demand peaks in May–Jun–Jul; the busiest month runs 5.3× the quietest.
- What does it cost to enter the black one piece niche?
- Listings span $7.21–$98.48; the average listing price is $32.09 (sweet spot $15–$100). The average incumbent carries 1,477 reviews — the moat a new listing must climb.