18 month pants
Skip itSoft demand (-36.4% this quarter) — this niche doesn't clear our bar today.
Competition
Incredible18%top-5 click share — an open shelf
Price range
Great$9.59–$59.68cheapest to priciest tracked listing — scored on the share inside $15–$100
Avg price
Great$19.13avg listing price — sweet spot $15–$100
Brand share
Good75%top-5 brand share — brands hold most of the demand
Returns
Okay3.3%return rate — above 5% kills the launch gate
Conversion
Okay2.3%search→purchase rate — share of searches ending in a sale
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Review moat
Bad12,201.9avg incumbent reviews — the moat a new listing must climb
Market size
Bad$49K$49K/yr · 109K searches
Growth
Bad-36.4%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, 18 month pants is a $49K/yr Amazon United States market (109K searches/yr). The top 5 brands hold 75% of demand. Demand peaks in Sep–Oct–Nov–Dec. Verdict: Skip it — 42/100.
Data updated Jul 8, 2026 · scored weekly · How we score niches
18 month pants market data
- Units sold / yr
- 3K–4K
- avg 0–100/product
- Revenue / yr
- $57K–$77K
- units × avg price
- Conversion rate
- 2.3%
- Avg BSR
- #65
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 79%
- Out of stock
- 12.8%
- Avg brand age
- 29 months
- Avg seller age
- 164 days
Competition & brand share
Clicks spread well past the top 5 (18% combined) — an open shelf where new products get seen.Brands
22 falling
Sellers
25
Top-5 brand share
75%
Top 20: 99%
Top-5 click share
18%
Top 20: 45%
Open market
21%
- Simple Joys by Carter's37%
- Amazon Essentials17%
- Gerber9%
- DREAM BUS6%
- The Children's Place6%
- Coaturi4%
Demand & seasonality
Weekly Amazon search volume, last 102 weeks — -36.4% search growth over the last 90 days.Peak months: Sep, Oct, Nov, Dec · busiest ÷ quietest = 4.2×
Top 18 month pants search terms
- 18 month girl pants26K/yr
- 18 month pants boys14K/yr
- 12-18 month girl pants13K/yr
- 12 month pants girls10K/yr
- 18 months girl pants10K/yr
- 18 month pants girls10K/yr
- 18 month old pants5K/yr
- 18 month sweatpants8K/yr
- pants 18 months boy5K/yr
- 18 month boys pants6K/yr
Top 18 month pants 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
Simple Joys by Carters Baby Girls 4-Pack Cotton Pants
Simple Joys by Carter's$16.384.8★37,938 rev
Simple Joys Baby Girls 4 pack pant Pants Pink/Grey 18 Months
Simple Joys by Carter's$16.824.8★37,938 rev
Gerber Baby Girls Multi-Pack Premium Leggings Brown Flowers Oatmeal and Black 18 Months
Gerber$18.744.7★2,428 rev
Amazon Essentials Baby Girls Legging Pack of 3 Ivory/Pink/Terracotta 18 Months
Amazon Essentials$15.404.4★805 rev
Simple Joys Baby Boys 4-pack pant Pants Blue/Grey 18 Months
Simple Joys by Carter's$16.724.8★67,716 rev
Newest
by launch date
Amazon Essentials Unisex Babies x Sofia Grainge Baby Girls and Toddler Cotton Linen Wide Leg Pull on Pant with Ruffles Light Pink 18 Months
Amazon Essentials$18.2287 rev
Simple Joys by Carters Baby Girls 4-Pack Cotton Pants
Simple Joys by Carter's$16.3837,938 rev
Simple Joys Baby Girls 4 pack pant Pants Pink/Grey 18 Months
Simple Joys by Carter's$16.8237,938 rev
Simple Joys Baby Boys 4-pack pant Pants Blue/Grey 18 Months
Simple Joys by Carter's$16.7267,716 rev
Simple Joys by Carters Baby Girls 4-Pack Cotton Pants
Simple Joys by Carter's$16.1837,938 rev
Trending
90-day click momentumAmazon Essentials Unisex Babies x Sofia Grainge Baby Girls and Toddler Cotton Linen Wide Leg Pull on Pant with Ruffles Light Pink 18 Months
Amazon Essentials$18.224.7★
Amazon Essentials Unisex Babies x Sofia Grainge Baby Girl and Toddlers Cotton Pique Short Sleeve T-Shirt & Pants Set Red Double Stripe 18 Months
Amazon Essentials$22.104.5★
YooAurvox 4 Pack Toddler Girls Capri Pants Baby Loose Wide Leg Pants Summer Casual Leggings Clothes with Pockets(18-24 Months Navy Blue Light Gray Hazy Blue Light Blue)
YooAurvox$34.854.4★
Amazon Essentials x Sofia Grainge Baby Boys Pull On Corduroy Pants Navy 18 Months
Amazon Essentials$16.594.4★
Garanimals Baby Boy Solid Jogger Pants - Machine-Washable Kids Clothes - Size 18 Months - Black Navy Blue Medium Grey Dark Green - 4 Pack Set
Garanimals$27.764.7★
What buyers say about 18 month pants
What buyers praise and complain about, mined from review topics.What buyers love
“bettering quality than expected”
“Fits perfect”
“Sooo soft”
“Great value”
“The colors are cute”
“Soft material”
“Very cute and as advertised”
“The elastic waist allows for easy on”
“Fits comfortably”
“Keeps my baby warm when its cold”
What buyers complain about
“Too big”
“They are a bit thin”
“See through”
“Runs small and the waist is short”
“The cream colored pair is petty thin”
“not super elastic”
“She grows into the length because they were a little long for her”
“Just not the best”
“Didn't care for the generic material appearing fake and shiny”
“These are really tight in the legs, which is not what I expected from U shaped pants, slightly long and surprisingly thin”
Top return reasons
Common questions
- Is 18 month pants profitable to sell on Amazon United States?
- The niche generates $49K/yr across 107 tracked products. 25 of 55 products launched in the last 360 days are still selling. 90-day search growth is -36.4%. Flapen's verdict: Skip it (42/100).
- How competitive is the 18 month pants niche?
- 22 brands and 25 sellers compete. The top 5 products take 18% of clicks and top 5 brands hold 75% of demand.
- What do buyers complain about in 18 month pants?
- Top complaints mined from reviews: Size-Overall, Thickness, Transparency. The return rate is 3.3%.
- When does demand for 18 month pants peak?
- Demand peaks in Sep–Oct–Nov–Dec; the busiest month runs 4.2× the quietest.
- What does it cost to enter the 18 month pants niche?
- Listings span $9.59–$59.68; the average listing price is $19.13 (sweet spot $15–$100). The average incumbent carries 12,202 reviews — the moat a new listing must climb.