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girls seamless underwear size 10-12

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A small market ($65K/yr) — this niche doesn't clear our bar today.

Market size 16Growth 19Conversion 32Competition 71Returns 55Price range 80Avg price 90Brand share 37Review moat 71Quality gap 21

Avg price

Great$20.80

avg listing price — sweet spot $15–$100

Price range

Great$10.61–$34.46

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

Competition

Good42%

top-5 click share — leaders hold, buyers still browse

Review moat

Good655.47

avg incumbent reviews — the moat a new listing must climb

Returns

Good2.8%

return rate — above 6% kills the launch gate

Brand share

Okay83%

top-5 brand share — brands hold most of the demand

Conversion

Okay2.5%

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

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

Growth

Bad-11.5%

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

Market size

Bad$65K

$65K/yr · 122K searches

Competition

The top 5 products take 42% of clicks — established leaders, but buyers still shop beyond them.

Brands

12 falling

Sellers

18

Top-5 brand share

83%

Open market

12%

  • Reebok31%
  • Finihen26%
  • Hanes10%
  • Demifill9%
  • BAMBOO COOL7%
  • Boboking5%
  • Open — no brand owns it (6 brands, 12%)

Product shelf

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

0%10%$6K20%$13K30%$19K40%$26K101001K10K100K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 34 tracked products in this niche — three views at once, no toggling.

Demand

Weekly Amazon search volume, last 51 weeks — -11.5% search growth over the last 90 days.
3K2KHoliday '25Spike '26Jul '25Sep '25Nov '25Jan '26Mar '26Apr '26

Reviews

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

What buyers love

Comfort-Overall27%

“So comfortable”

Size-Overall18%

“Smooth fit”

Soft Feel16%

“Very smooth”

Quality-Overall8%

“Very nice quality underwear for a good price”

Value For Money4%

“affordable price”

Material Quality3%

“Really like the material. breathable”

Advertised Vs Actual Product3%

“as advertised”

Color2%

“Nice variety of colors”

Stretchability/Expandability/Elasticity2%

“They stretch easily”

Breathability2%

“Very breathable”

What buyers complain about

Size-Overall20%

“Too big”

Stretchability/Expandability/Elasticity11%

“These have no elastic in them”

Comfort-Overall6%

“Not comfortable at all”

Quality-Overall6%

“Cheap”

Stitch/Finish/Polish3%

“No seam shows at all”

Durability3%

“They literally fell off”

Thickness3%

“That means its twice as thick there”

Material Quality2%

“Material is too silky”

Color2%

“missing the red color”

Product Condition2%

“Used”

Top return reasons

Size-Overall56%
Material Quality11%
Waist Fit9%
Thigh Fit4%
Advertised Vs Actual Product3%
Shape/Style2%
Thin2%
Length2%
Hip Fit1%
Comfort-Overall1%