Is plus size one-piece swimsuits profitable to sell on Amazon United States?

The niche generates $20K/yr across 328 tracked products. 21 of 101 products launched in the last 360 days are still selling. 90-day search growth is +59.3%. Flapen's verdict: Worth a look (54/100).

How competitive is the plus size one-piece swimsuits niche?

66 brands and 75 sellers compete. The top 5 products take 9% of clicks and top 5 brands hold 44% of demand.

What do buyers complain about in plus size one-piece swimsuits?

Top complaints mined from reviews: Size-Overall, Color, Chest Fit. The return rate is 14.8% — above our launch gate.

What does it cost to enter the plus size one-piece swimsuits niche?

Listings span $10.50–$56.14; the average listing price is $31.58 (sweet spot $15–$100). The average incumbent carries 1,949 reviews — the moat a new listing must climb.

plus size one-piece swimsuits

Worth a look

Shows a fragmented shelf (top 5 take 9% of clicks), but high returns (14.8%) keeps it on the watch list.

Competition

Incredible9%

top-5 click share — an open shelf

Avg price

Incredible$31.58

avg listing price — sweet spot $15–$100

Brand share

Great44%

top-5 brand share — no brand owns this niche

Price range

Great$10.50–$56.14

cheapest to priciest tracked listing — scored on the share inside $15–$100

Growth

Good+59.3%

90-day search growth — must beat 0% to launch

Quality gap

Good4.3★

avg incumbent rating — lower means beatable quality

Review moat

Okay1,948.95

avg incumbent reviews — the moat a new listing must climb

Market size

Bad$20K

$20K/yr · 245K searches

Conversion

Bad0.3%

search→purchase rate — share of searches ending in a sale

Returns

Bad14.8%

return rate — above 5% kills the launch gate

Signals No Dominant Brand High Returns

According to Flapen's Amazon United States niche tracking, plus size one-piece swimsuits is a $20K/yr Amazon United States market (245K searches/yr). The top 5 brands hold 44% of demand. Verdict: Worth a look — 54/100.

Data updated Jul 14, 2026 · scored weekly · How we score niches

plus size one-piece swimsuits market data

Units sold / yr: 750–1K; avg 0–100/product
Revenue / yr: $24K–$32K; units × avg price
Conversion rate: 0.3%
Avg BSR: #349
Page quality: 0%
Prime: 100%
Sponsored: 91%
Out of stock: 2.1%
Avg brand age: 32 months
Avg seller age: 158 days

Competition & brand share

Clicks spread well past the top 5 (9% combined) — an open shelf where new products get seen.

Brands

66 rising

Sellers

Top-5 brand share

44%

Top 20: 81%

Top-5 click share

Top 20: 23%

Open market

56%

Aqua Eve10%
Daci8%
Yonique7%
Blooming Jelly6%
Holipick6%
Charmo5%

Demand

Weekly Amazon search volume, last 50 weeks — +59.3% search growth over the last 90 days.

Open Trend

Top plus size one-piece swimsuits search terms

plus size swimsuit for women one piece45K/yr +129.6%0.1% conv.
green one piece swimsuit51K/yr -0.4%0.2% conv.
purple one piece swimsuit27K/yr +65.7%0.2% conv.
one piece swimsuit plus size20K/yr +151.2%0.2% conv.
one piece plus size swimsuit34K/yr +7.4%0.1% conv.
bathing suit plus16K/yr +143.6%0.1% conv.
plus size one piece18K/yr +94.9%0.1% conv.
purple one piece swimsuits for women10K/yr +416.0%0.2% conv.
plus size one-piece swimsuits22K/yr -28.8%0.2% conv.

All search terms

Top plus size one-piece swimsuits 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.

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

Yonique Plus Size One Piece Swimsuits for Women Tummy Control Bathing Suits Full Coverage Swimwear Blue Stripe 18W

Yonique$36.874.5★159 rev

Charmo Plus Size Bathing Suit for Women One Piece Swimdress Tummy Control Ruched Swimsuits Scalloped V Neck Swimwear Black 3X

Charmo$33.374.4★372 rev

Aqua Eve Womens Plus Size One Piece Swimsuit- Tummy Control Bathing Suit Full Coverage Swimwear Black 18W

Aqua Eve$35.934.6★767 rev

Holipick Black Plus Size Women Tummy Control One Piece Swimsuit - Push Up Bathing Suit Full Coverage Slimming Swimwear 18 Plus (US 18W)

Holipick$35.294.5★1,078 rev

Charmo Plus Size Tummy Control Swimsuit One Piece Scallop Trim Ribbed Ruched Full Coverage Bathing Suits for Curvy Women Army Green 1X

Charmo$32.014.4★370 rev

Newest

by launch date

Yonique Plus Size One Piece Swimsuit -Tummy Control Ribbed Bathing Suit Tie Front Cutout Plus Size Swimwear 2026 Black 20W

Yonique$33.0910 rev

2mo ago

UMIPUBO Womens One Piece Swimsuit Tummy Control Ruched V Neck Bathing Suit Floral Back Cutout Swimwear for Beach Vacation(Purple S)

UMIPUBO$21.0033 rev

6mo ago

Eomenie Womens One Piece Swimsuit Tummy Control Slimming Bathing Suit Color Block Spaghetti Strap 1 Piece Swim Suit Swimwear

Eomenie$35.80627 rev

11mo ago

Daci Plus Size One Piece Swimsuit Colorful Black Tummy Control Bathing Suit 18 Plus

Daci$36.062,772 rev

1y ago

Aqua Eve Plus Size Swimsuits One Piece Bathing Suit for Women Tummy Control Sexy Halter Swimwear Colorful Black 18W

Aqua Eve$35.94385 rev

1y ago

What buyers say about plus size one-piece swimsuits

What buyers praise and complain about, mined from review topics.

What buyers love

Size-Overall33%

“Fit as expected”

Comfort-Overall11%

“So comfortable”

Shape/Style10%

“Very flattering”

Color8%

“Great color choices”

Quality-Overall7%

“appears well made”

Material Quality4%

“the material feels well made”

Value For Money3%

“Great value for the money”

Soft Feel2%

“is buttery soft”

Strap/String Quality2%

“Straps don't tug at all”

Chest Fit2%

“It offers decent chest support”

What buyers complain about

Size-Overall30%

“Size down”

Color4%

“Color fades”

Chest Fit4%

“tight fit for my bust”

Shape/Style3%

“Not flattering”

Material Quality3%

“Its okay... Not the best material”

Quality-Overall2%

“Looks cheap and has no chest support”

Strap/String Quality2%

“straps are not adjustable”

Durability2%

“not very durable”

Stretchability/Expandability/Elasticity2%

“it has stretched out terribly after a short time”

Advertised Vs Actual Product2%

“Just doesn't do what it claims”

Top return reasons

Size-Overall54%

Chest Fit13%

Length8%

Waist Fit5%

Shape/Style4%

Hip Fit3%

Color3%