---
title: "18 Month Pajamas — $127K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/18-month-pajamas"
last_updated: "2026-08-08T01:34:31.236Z"
locale: en
meta:
description: "Niche score 47/100 · $127K/yr market · 305K searches/yr · $22.18 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 47/100 · $127K/yr market · 305K searches/yr · $22.18 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "18 Month Pajamas — $127K/yr Amazon US Niche (2026) - Flapen"
---
# **18 month pajamas**
**Skip it**
Soft demand (-17.0% this quarter) — this niche doesn't clear our bar today.
Market size 29Growth 17Conversion 23Competition 98Returns 52Price range 82Avg price 93Brand share 63Review moat 21Quality gap 24
**Competition**
**Incredible****9%**
top-5 click share — an open shelf
**Avg price**
**Great****$22.18**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$9.52–$44.23**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Good****67%**
top-5 brand share — brands hold most of the demand
**Returns**
**Good****2.9%**
return rate — above 5% kills the launch gate
**Market size**
**Okay****$127K**
$127K/yr · 305K searches
**Quality gap**
**Bad****4.6★**
avg incumbent rating — lower means beatable quality
**Conversion**
**Bad****1.9%**
search→purchase rate — share of searches ending in a sale
**Review moat**
**Bad****12,164.59**
avg 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 ~~](https://flapen.com/research/methodology)
## **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.
8K6KPrime Day '24Spike '24Holiday '24Prime Day '25Spike '25Black Friday '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.5×
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/18-month-pajamas/trend)
## **Top 18 month pajamas search terms**
- **18 month pajamas**68K/yr-9.0%2.0% conv. - **24 month pajamas boys**74K/yr-32.3%2.9% conv. - **24 month boy pajamas**30K/yr+3.5%2.1% conv. - **18 month sleepers**26K/yr-30.8%2.6% conv. - **18 month old pajamas**11K/yr+21.9%1.6% conv. - **18 month pjs**13K/yr+11.1%1.3% conv. - **12-18 month sleepers**11K/yr-1.4%0.7% conv. - **18m pajamas**10K/yr-3.3%1.4% conv. - **baby pajamas 18 months**7K/yr-20.0%2.0% conv. - **carters 18 month pajamas**7K/yr-33.0%2.4% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/18-month-pajamas/search-terms)
## **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.
0%1%$1K2%$3K3%$4K4%$5K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
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
[1**Amazon Essentials Unisex_baby Tight Fit Cotton Footed Pajama (2 Pack) Little Bunnies/Pale Blue 18 Months**Amazon Essentials**$15.44**4.4★675 rev](https://www.amazon.com/dp/B0D9ZLJCTV) [2**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**$24.31**4.8★52,427 rev](https://www.amazon.com/dp/B0BL8FBQ6Z) [3**Gerber Baby Boys 4-Pack Footed Pajamas Bears & Trucks Grey 24 Months**Gerber**$28.66**4.5★5,203 rev](https://www.amazon.com/dp/B08GH4WJ6B) [4**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**$25.49**4.7★48,657 rev](https://www.amazon.com/dp/B07GKYSB89) [5**Simple Joys by Carters Baby Girls 3-Pack Snug Fit Footed Cotton Pajamas Sleepwear floral/turtle/swan 18 Months**Simple Joys by Carter's**$25.40**4.7★38,559 rev](https://www.amazon.com/dp/B07GXS4KCY)
**~~View all top sellers →~~**
### **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**$25.90**65 rev2mo ago](https://www.amazon.com/dp/B0GGHW3FXJ) [**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**$24.31**52,427 rev2mo ago](https://www.amazon.com/dp/B0BL8FBQ6Z) [**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**$25.49**48,657 rev2mo ago](https://www.amazon.com/dp/B07GKYSB89) [**Simple Joys by Carters Baby Girls 3-Pack Snug Fit Footed Cotton Pajamas Sleepwear floral/turtle/swan 18 Months**Simple Joys by Carter's**$25.40**38,559 rev2mo ago](https://www.amazon.com/dp/B07GXS4KCY) [**Simple Joys by Carters Baby 3-pack Snug-fit Footless Cotton Pajamas Crab/Sea Creatures/Cars 24 Months**Simple Joys by Carter's**$25.53**52,427 rev2mo ago](https://www.amazon.com/dp/B0744PWMZ2)
**~~View all new products →~~**
### **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**$24.11**4.7★**▲ 67%**](https://www.amazon.com/dp/B0GGWHY4KS) [**Yoofoss Toddler pajamas 100% Organic Cotton Baby Sleeper for Boys girls 2-way Zipper Footless Romper 3 Pack Baby Pjs 18 Months**Yoofoss**$25.90**4.6★**▲ 66%**](https://www.amazon.com/dp/B0GGHW3FXJ) [**Amazon Essentials Unisex_baby Tight Fit Cotton Footed Pajama (2 Pack) Little Bunnies/Pale Blue 24 Months**Amazon Essentials**$15.11**4.4★**▲ 57%**](https://www.amazon.com/dp/B0D9ZXFZ7Y) [**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**$25.57**4.7★**▲ 57%**](https://www.amazon.com/dp/B0BL8FNBFV) [**Gerber Baby Boys 2-Pack Footed Pajamas Bear Green Stripes White 24 Months**Gerber**$14.45**4.4★**▲ 50%**](https://www.amazon.com/dp/B08GHCVFX9)
**~~View all trending →~~**
## **What buyers say about 18 month pajamas**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Soft Feel**15%
*“Really soft”*
**Size-Overall**14%
*“Fit well”*
**Quality-Overall**11%
*“Great quality as usual from Carter”*
**Comfort-Overall**8%
*“Very comfortable”*
**Material Quality**4%
*“Great Material”*
**Warmth**4%
*“Keeps my baby warm”*
**Sleep Quality**3%
*“It really helps our baby sleep well”*
**Value For Money**3%
*“Good for the price”*
**Design-Overall**3%
*“Cute Designs”*
**Color**3%
*“Colors are beautiful”*
### **What buyers complain about **
**Size-Overall**21%
*“Too big”*
**Quality-Overall**7%
*“Poor quality, runs way smaller than everything else from the brand”*
**Material Quality**5%
*“The material felt cheap”*
**Zipper Quality**5%
*“Broken zipper”*
**Thickness**4%
*“These were a lot thinner than I expected”*
**Stretchability/Expandability/Elasticity**3%
*“do not stretch”*
**Arm Fit**3%
*“Short arms”*
**Durability**3%
*“broken after 2 months”*
**Stitch/Finish/Polish**2%
*“One set was not sewn properly”*
**Hard Feel**2%
*“not super soft”*
### **Top return reasons **
**Size-Overall**53%
**Length**11%
**Material Quality**7%
**Zipper Quality**3%
**Advertised Vs Actual Product**3%
**Thin**2%
**Sleeve Fit**2%
**Value For Money**2%
**Arm Fit**2%
**Thigh Fit**1%
## **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.
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