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18 month long sleeve onesies boy

Skip it43/100

a small market ($0/yr) — 18 month long sleeve onesies boy doesn't clear our bar today.

Market/yr

$0

Growth (1y)

+121.0%

Products

15

Brands

5

was 7 a year ago

Sellers

5

Price range

$13.84–$30.87

Returns

2.4%

Rating

4.8★

43/100

Skip it

Scored 43/100 across market size, growth, competition, quality gap, and returns.

Market sizeGrowthCompetitionQuality gapReturns
Market size
0
×0.30
Growth
67
×0.30
Competition
64
×0.20
Quality gap
20
×0.10
Returns
81
×0.10

Demand

Weekly Amazon search volume, last 104 weeks — +121.0% year over year.
1K647Spike '24Spike '25Prime Day '25Spike '26Jul '24Nov '24Mar '25Jul '25Nov '25Mar '26

Seasonality

Monthly demand index across the year — 1.00 is average.

Peak months: Jan, Oct, Nov, Dec · busiest ÷ quietest = 15.3×

Competition

53%Simple Joys by Carter's
  • Simple Joys by Carter's53%
  • Amazon Essentials21%
  • Gerber18%
  • Butterblu4%
  • Hudson Baby4%

The top 5 products take 47% of clicks — established leaders, but buyers still shop beyond them. 5 brands and 5 sellers compete here.

Brands

5 falling

was 7 a year ago

Sellers

5

Top 5 brand share

100%

#ProductBrandPriceRatingReviewsClick shareTrend
2Simple Joys by Carter's$14.524.9★9,31111%rising
3Simple Joys by Carter's$17.794.8★39,8099%rising

Product shelf

All 15 tracked products in this niche.

Reviews

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

What buyers love

Size-Overall27%

“fit incredible”

Quality-Overall12%

“Good quality”

Value For Money10%

“Worth the money”

Gifting Purpose7%

“Christmas present”

Durability7%

“durable”

Warmth6%

“Great price and quality, on the thinner side so good for warmer weather and breathable”

Soft Feel6%

“SO SOFT”

Breathability4%

“Definitely breathable”

Material Quality4%

“Material is soft, comfortable and value for the money is awesome”

Comfort-Overall4%

“comfortable”

What buyers complain about

Color33%

“Color change after wash”

Size-Overall15%

“RUNS REALLY SMALL”

Thickness8%

“REALLY THIN MATERIAL”

Machine Wash Suitability8%

“AFFRAID THEYRE GOING TO RIP IN WASHING MACHINE”

Material Quality8%

“REALLY THIN MATERIAL”

Sleeve Fit7%

“the sleeves are already short”

Top return reasons

  • Size-Overall63%
  • Length10%
  • Sleeve Fit6%
  • Material Quality5%
  • Advertised Vs Actual Product3%
  • Value For Money2%
  • Thin2%
  • Chest Fit1%
  • Quality-Overall1%
  • Arm Fit1%

Data scraped July 8, 2026 · Marketplace baseline: 4.4★ avg rating · $22.66 median price · 2.2% median returns across 14,544 tracked niches.