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baby undershirt

Skip it48/100

a small market ($66K/yr) — baby undershirt doesn't clear our bar today.

Market/yr

$66K

Growth (1y)

+169.0%

Products

48

Brands

13

was 22 a year ago

Sellers

20

Price range

$8.64–$36.69

Returns

2.0%

Rating

4.8★

48/100

Skip it

Scored 48/100 across market size, growth, competition, quality gap, and returns.

Market sizeGrowthCompetitionQuality gapReturns
Market size
3
×0.30
Growth
73
×0.30
Competition
74
×0.20
Quality gap
20
×0.10
Returns
84
×0.10

Demand

Weekly Amazon search volume, last 104 weeks — +169.0% year over year.
4K2KHoliday '24Prime Day '25Holiday '25Jul '24Nov '24Mar '25Jul '25Nov '25Mar '26

Seasonality

Monthly demand index across the year — 1.00 is average.

Peak months: Dec · busiest ÷ quietest = 1.4×

Competition

57%Gerber
  • Gerber57%
  • Simple Joys by Carter's9%
  • Yoofoss8%
  • Amazon Essentials6%
  • Onesies Brand5%
  • Unnivoll5%
  • Other (7 brands)11%

Clicks spread well past the top 5 (39% combined) — an open shelf where new products get seen. 13 brands and 20 sellers compete here.

Brands

13 falling

was 22 a year ago

Sellers

20

Top 5 brand share

84%

#ProductBrandPriceRatingReviewsClick shareTrend
1
Gerber Baby 5-Pack Solid Onesies Bodysuits White 3-6 MonthsGerber Baby 5-Pack Solid Onesies Bodysuits White 3-6 Months
Gerber$13.074.8★58,05315%rising
2
Gerber Baby 8-Pack Short Sleeve Onesies Bodysuits Solid White 3-6 MonthsGerber Baby 8-Pack Short Sleeve Onesies Bodysuits Solid White 3-6 Months
Gerber$16.804.8★56,10512%falling
3
Gerber Baby 8-Pack Short Sleeve Onesies Bodysuits Solid White NewbornGerber Baby 8-Pack Short Sleeve Onesies Bodysuits Solid White Newborn
Gerber$16.814.8★56,1054%falling
4
Gerber Baby Boys 4 Pack N Play Footie And Toddler Sleepers Jungle Blue 3-6 Months USGerber Baby Boys 4 Pack N Play Footie And Toddler Sleepers Jungle Blue 3-6 Months US
Gerber$25.984.7★52,5624%falling
5
Gerber Baby Girls 15 Piece Onesies Bodysuit Multi Size Pack Shirt White 0-3M 3-6M 6-9M USGerber Baby Girls 15 Piece Onesies Bodysuit Multi Size Pack Shirt White 0-3M 3-6M 6-9M US
Gerber$35.354.8★6,6404%rising
6
Amazon Essentials Unisex Toddlers Baby Unisex 6-Pack Sleeveless Bodysuits White 3-6 MonthsAmazon Essentials Unisex Toddlers Baby Unisex 6-Pack Sleeveless Bodysuits White 3-6 Months
Amazon Essentials$16.694.8★5,1393%rising
7
Simple Joys by Carters Baby Boys 6-Pack Short-Sleeve Bodysuits Bear/Construction/Rhino/Stripe 3-6 MonthsSimple Joys by Carters Baby Boys 6-Pack Short-Sleeve Bodysuits Bear/Construction/Rhino/Stripe 3-6 Months
Simple Joys by Carter's$19.004.8★66,9533%rising
8
Gerber Baby 8-Pack Short Sleeve Onesies Bodysuits Southwest 3-6 MonthsGerber Baby 8-Pack Short Sleeve Onesies Bodysuits Southwest 3-6 Months
Gerber$23.944.8★56,1052%flat
9
Amazon Essentials x Sofia Grainge Unisex Babies Cotton Footed Sleep and Play One-piece Bodysuit Pack of 2 Ivory/Navy 3-6 MonthsAmazon Essentials x Sofia Grainge Unisex Babies Cotton Footed Sleep and Play One-piece Bodysuit Pack of 2 Ivory/Navy 3-6 Months
Amazon Essentials$16.244.7★8012%falling
10
Yoofoss Rayon Made From Bamboo Baby Pajamas 3pcs Newborn Sleepers For Boy Girl Clothes 3-6 Months Footed Pajamas Zipper Baby Pjs with Mitten Sage&green&beigeYoofoss Rayon Made From Bamboo Baby Pajamas 3pcs Newborn Sleepers For Boy Girl Clothes 3-6 Months Footed Pajamas Zipper Baby Pjs with Mitten Sage&green&beige
Yoofoss$31.584.6★2532%rising
11
Yoofoss Baby Bodysuits 100% Organic Cotton Baby Short Sleeve Baby Boys Girls Clothes Soft Newborn Infant Romper 5 Pack 3-6 MonthsYoofoss Baby Bodysuits 100% Organic Cotton Baby Short Sleeve Baby Boys Girls Clothes Soft Newborn Infant Romper 5 Pack 3-6 Months
Yoofoss$9.893.9★422%rising
12
little planet by carters Baby 3-pack Short Sleeve Bodysuits made with Organic Cotton Safari 6Mlittle planet by carters Baby 3-pack Short Sleeve Bodysuits made with Organic Cotton Safari 6M
little planet by carter's$14.364.8★2,1302%rising
13
Unnivoll Baby Pajamas 100% Cotton Baby Sleepers for 3-6 Months 3Pcs Footie Pajamas Baby Boys Girls Clothes Soft Infant Footed PJs with Mitten Cuffs Two Way Zipper Long SleeveUnnivoll Baby Pajamas 100% Cotton Baby Sleepers for 3-6 Months 3Pcs Footie Pajamas Baby Boys Girls Clothes Soft Infant Footed PJs with Mitten Cuffs Two Way Zipper Long Sleeve
Unnivoll$21.264.7★2982%rising
14
Simple Joys Kids 8 pack short sleeve original bodysuits Shirt White 3-6 MonthsSimple Joys Kids 8 pack short sleeve original bodysuits Shirt White 3-6 Months
Simple Joys by Carter's$15.704.8★22,2952%flat
15
Yoofoss Baby Pajamas 100% Organic Cotton Baby Sleepers for 3-6 Month Boys Girls Clothes 3-Pack Soft infant Toddler Footed PJs with Mitten Cuffs Zipper Footies PajamasYoofoss Baby Pajamas 100% Organic Cotton Baby Sleepers for 3-6 Month Boys Girls Clothes 3-Pack Soft infant Toddler Footed PJs with Mitten Cuffs Zipper Footies Pajamas
Yoofoss$21.884.7★1,1812%falling

Product shelf

All 48 tracked products in this niche.

Gerber Baby 5-Pack Solid Onesies Bodysuits White 3-6 Months

Gerber Baby 5-Pack Solid Onesies Bodysuits White 3-6 Months

Gerber

$13.074.8★58,053 reviews

Gerber Baby 8-Pack Short Sleeve Onesies Bodysuits Solid White 3-6 Months

Gerber Baby 8-Pack Short Sleeve Onesies Bodysuits Solid White 3-6 Months

Gerber

$16.804.8★56,105 reviews

Gerber Baby 8-Pack Short Sleeve Onesies Bodysuits Solid White Newborn

Gerber Baby 8-Pack Short Sleeve Onesies Bodysuits Solid White Newborn

Gerber

$16.814.8★56,105 reviews

Gerber Baby Boys 4 Pack N Play Footie And Toddler Sleepers Jungle Blue 3-6 Months US

Gerber Baby Boys 4 Pack N Play Footie And Toddler Sleepers Jungle Blue 3-6 Months US

Gerber

$25.984.7★52,562 reviews

Gerber Baby Girls 15 Piece Onesies Bodysuit Multi Size Pack Shirt White 0-3M 3-6M 6-9M US

Gerber Baby Girls 15 Piece Onesies Bodysuit Multi Size Pack Shirt White 0-3M 3-6M 6-9M US

Gerber

$35.354.8★6,640 reviews

Amazon Essentials Unisex Toddlers Baby Unisex 6-Pack Sleeveless Bodysuits White 3-6 Months

Amazon Essentials Unisex Toddlers Baby Unisex 6-Pack Sleeveless Bodysuits White 3-6 Months

Amazon Essentials

$16.694.8★5,139 reviews

Simple Joys by Carters Baby Boys 6-Pack Short-Sleeve Bodysuits Bear/Construction/Rhino/Stripe 3-6 Months

Simple Joys by Carters Baby Boys 6-Pack Short-Sleeve Bodysuits Bear/Construction/Rhino/Stripe 3-6 Months

Simple Joys by Carter's

$19.004.8★66,953 reviews

Gerber Baby 8-Pack Short Sleeve Onesies Bodysuits Southwest 3-6 Months

Gerber Baby 8-Pack Short Sleeve Onesies Bodysuits Southwest 3-6 Months

Gerber

$23.944.8★56,105 reviews

Reviews

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

What buyers love

Quality-Overall18%

“Excellent product”

Soft Feel17%

“Material is soft”

Size-Overall12%

“To new great grand child looks like it will fit lookcomfortable”

Gifting Purpose5%

“Christmas gift”

Value For Money5%

“Good value for money”

Comfort-Overall5%

“Comfortable”

Material Quality4%

“Amazing material”

Color4%

“All colors are nice”

Ease Of Use2%

“Easy to use”

Warmth2%

“Instead he feel comfortable warm”

What buyers complain about

Size-Overall30%

“Runs very small”

Quality-Overall10%

“Poor sizing and quality”

Material Quality8%

“Body of the sleeper is a cotton rayon blend”

Shrinkage Resistance6%

“Runs small, shrinks”

Stitch/Finish/Polish3%

“Stitching rips”

Durability3%

“has holes after several wears”

Print Quality3%

“Inferior quality, ugly prints”

Value For Money2%

“$100 for 5 is out of budget”

Gap/Hole1%

“they already have holes”

Machine Wash Suitability1%

“After one wash looks really old”

Top return reasons

  • Size-Overall64%
  • Length10%
  • Value For Money5%
  • Material Quality4%
  • Advertised Vs Actual Product2%
  • Sleeve Fit2%
  • Thin2%
  • Color1%
  • Quality-Overall1%
  • Zipper Quality1%

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