18 month pajamas
Skip itSoft demand (-17.0% this quarter) — this niche doesn't clear our bar today.
Competition
Incredible9%top-5 click share — an open shelf
Avg price
Great$22.18avg listing price — sweet spot $15–$100
Price range
Great$9.52–$44.23cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Good67%top-5 brand share — brands hold most of the demand
Returns
Good2.9%return rate — above 5% kills the launch gate
Market size
Okay$127K$127K/yr · 305K searches
Quality gap
Bad4.6★avg incumbent rating — lower means beatable quality
Conversion
Bad1.9%search→purchase rate — share of searches ending in a sale
Review moat
Bad12,164.59avg incumbent reviews — the moat a new listing must climb
Growth
Bad-17.0%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, 18 month pajamas is a $127K/yr Amazon United States market (305K searches/yr). The top 5 brands hold 67% of demand. Verdict: Skip it — 47/100.
Data updated Jul 8, 2026 · scored weekly · How we score niches
18 month pajamas market data
- Units sold / yr
- 8K–10K
- avg 0–100/product
- Revenue / yr
- $177K–$222K
- units × avg price
- Conversion rate
- 1.9%
- Avg BSR
- #173
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 90%
- Out of stock
- 7.3%
- Avg brand age
- 37 months
- Avg seller age
- 172 days
Competition & brand share
Clicks spread well past the top 5 (9% combined) — an open shelf where new products get seen.Brands
34 rising
Sellers
32
Top-5 brand share
67%
Top 20: 95%
Top-5 click share
9%
Top 20: 27%
Open market
32%
- Gerber25%
- Simple Joys by Carter's22%
- Amazon Essentials7%
- Burt's Bees Baby6%
- Onesies Brand5%
- little planet by carter's4%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -17.0% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.5×
Top 18 month pajamas search terms
- 18 month pajamas68K/yr
- 24 month pajamas boys74K/yr
- 24 month boy pajamas30K/yr
- 18 month sleepers26K/yr
- 18 month old pajamas11K/yr
- 18 month pjs13K/yr
- 12-18 month sleepers11K/yr
- 18m pajamas10K/yr
- baby pajamas 18 months7K/yr
- carters 18 month pajamas7K/yr
Top 18 month pajamas 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
Amazon Essentials Unisex_baby Tight Fit Cotton Footed Pajama (2 Pack) Little Bunnies/Pale Blue 18 Months
Amazon Essentials$15.444.4★675 rev
Simple Joys By Carters Boys Snug-fit Footless Cotton Pajamas Baby And Toddler Sleepers Blue/Green Dino 18 Months US
Simple Joys by Carter's$24.314.8★52,427 rev
Gerber Baby Boys 4-Pack Footed Pajamas Bears & Trucks Grey 24 Months
Gerber$28.664.5★5,203 rev
Simple Joys by Carters Baby Boys 3-Pack Snug Fit Footed Cotton Pajamas Sleepwear dino/animals green/lion 24 Months
Simple Joys by Carter's$25.494.7★48,657 rev
Simple Joys by Carters Baby Girls 3-Pack Snug Fit Footed Cotton Pajamas Sleepwear floral/turtle/swan 18 Months
Simple Joys by Carter's$25.404.7★38,559 rev
Newest
by launch date
Yoofoss Toddler pajamas 100% Organic Cotton Baby Sleeper for Boys girls 2-way Zipper Footless Romper 3 Pack Baby Pjs 18 Months
Yoofoss$25.9065 rev
Simple Joys By Carters Boys Snug-fit Footless Cotton Pajamas Baby And Toddler Sleepers Blue/Green Dino 18 Months US
Simple Joys by Carter's$24.3152,427 rev
Simple Joys by Carters Baby Boys 3-Pack Snug Fit Footed Cotton Pajamas Sleepwear dino/animals green/lion 24 Months
Simple Joys by Carter's$25.4948,657 rev
Simple Joys by Carters Baby Girls 3-Pack Snug Fit Footed Cotton Pajamas Sleepwear floral/turtle/swan 18 Months
Simple Joys by Carter's$25.4038,559 rev
Simple Joys by Carters Baby 3-pack Snug-fit Footless Cotton Pajamas Crab/Sea Creatures/Cars 24 Months
Simple Joys by Carter's$25.5352,427 rev
Trending
90-day click momentum
Burts Bees Baby Organic Cotton Footed Pajamas for Girls Zipper P Sleeper Snug Fit Sleepwear with Non-Slip Bee Grips
Burt's Bees Baby$24.114.7★
Yoofoss Toddler pajamas 100% Organic Cotton Baby Sleeper for Boys girls 2-way Zipper Footless Romper 3 Pack Baby Pjs 18 Months
Yoofoss$25.904.6★
Amazon Essentials Unisex_baby Tight Fit Cotton Footed Pajama (2 Pack) Little Bunnies/Pale Blue 24 Months
Amazon Essentials$15.114.4★
Simple Joys By Carters Boys Snug-fit Footed Cotton Pajamas Baby And Toddler Sleepers Blue/Green Dino 18 Months US
Simple Joys by Carter's$25.574.7★
Gerber Baby Boys 2-Pack Footed Pajamas Bear Green Stripes White 24 Months
Gerber$14.454.4★
What buyers say about 18 month pajamas
What buyers praise and complain about, mined from review topics.What buyers love
“Really soft”
“Fit well”
“Great quality as usual from Carter”
“Very comfortable”
“Great Material”
“Keeps my baby warm”
“It really helps our baby sleep well”
“Good for the price”
“Cute Designs”
“Colors are beautiful”
What buyers complain about
“Too big”
“Poor quality, runs way smaller than everything else from the brand”
“The material felt cheap”
“Broken zipper”
“These were a lot thinner than I expected”
“do not stretch”
“Short arms”
“broken after 2 months”
“One set was not sewn properly”
“not super soft”
Top return reasons
Common questions
- Is 18 month pajamas profitable to sell on Amazon United States?
- The niche generates $127K/yr across 257 tracked products. 57 of 90 products launched in the last 360 days are still selling. 90-day search growth is -17.0%. Flapen's verdict: Skip it (47/100).
- How competitive is the 18 month pajamas niche?
- 34 brands and 32 sellers compete. The top 5 products take 9% of clicks and top 5 brands hold 67% of demand.
- What do buyers complain about in 18 month pajamas?
- Top complaints mined from reviews: Size-Overall, Quality-Overall, Material Quality. The return rate is 2.9%.
- When does demand for 18 month pajamas peak?
- Demand is steady year-round — the busiest month runs 1.5× the quietest.
- What does it cost to enter the 18 month pajamas niche?
- Listings span $9.52–$44.23; the average listing price is $22.18 (sweet spot $15–$100). The average incumbent carries 12,165 reviews — the moat a new listing must climb.