overnight diapers size 3
Worth a lookShows a $11.6M/yr market, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size
Incredible$11.6M$11.6M/yr · 2.4M searches
Conversion
Incredible12.7%search→purchase rate — share of searches ending in a sale
Avg price
Incredible$38.77avg listing price — sweet spot $15–$100
Price range
Incredible$25.78–$64.23cheapest to priciest tracked listing — scored on the share inside $15–$100
Returns
Great1.7%return rate — above 6% kills the launch gate
Quality gap
Great4.2★avg incumbent rating — lower means beatable quality
Growth
Bad-6.4%90-day search growth — must beat 0% to launch
Competition
Bad77%top-5 click share — a locked-up shelf
Review moat
Bad32,612.27avg incumbent reviews — the moat a new listing must climb
Brand share
Bad100%top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, overnight diapers size 3 is a $11.6M/yr Amazon United States market (2.4M searches/yr). The top 5 brands hold 100% of demand. Verdict: Worth a look — 57/100.
Data updated Jul 12, 2026 · scored weekly · How we score niches
Market data
- Units sold / yr
- 250K–300K
- avg 25,000–30,000/product
- Revenue / yr
- $9.7M–$11.6M
- units × avg price
- Launch success
- —
- 3 of 3 new (360d)
- Conversion rate
- 12.7%
- Avg BSR
- #11
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 73%
- Out of stock
- 0.0%
- Avg brand age
- 52 months
- Avg seller age
- 141 days
Competition
The top 5 products capture 77% of clicks — a locked-up shelf that new listings rarely crack.Brands
3 rising
Sellers
21
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
77%
Top 20: 100%
Open market
0%
- Pampers81%
- The Honest Company15%
- MooMoo Baby4%
- Open — no brand owns it (0%)
Demand
Weekly Amazon search volume, last 44 weeks — -6.4% search growth over the last 90 days.Product shelf
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 11 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Pampers Diapers - Baby Dry - Size 2 112 Count Absorbent Disposable Infant Diaper (Packaging May Vary)
Pampers$28.764.7★97,820 rev
Pampers Diapers - Baby Dry - Size 2 234 Count Absorbent Disposable Infant Diaper (Packaging May Vary)
Pampers$54.074.7★97,820 rev
The Honest Company Comfort Dry Disposable Daytime Diapers for Sensitive Skin Hypoallergenic Fragrance-Free Multi-Colored Giraffes + Barnyard Babies Club Box Size 2 (12-18 lbs) 72 Count
The Honest Company$25.784.2★2,613 rev
Pampers Diapers - Baby Dry - Size 2 186 Count Absorbent Disposable Infant Diaper (Packaging May Vary)
Pampers$42.944.7★97,820 rev
The Honest Company Comfort Dry Disposable Daytime Diapers Hypoallergenic Fragrance-Free Sensitive Skin Rose Blossom + Tutu Cute Club Box Size 2 (1218 lbs) 72 Count
The Honest Company$26.934.2★2,613 rev
Newest
by launch date
Pampers Amore Size 2 (10-22 lbs) 74 Count Our Best Diaper Hypoallergenic & Fragrance Free Up to 100% Leakproof Soft as Cashmere
Pampers$27.04450 rev
Pampers Amore Size 2 (10-22 lbs) 186 Count Our Best Diaper Hypoallergenic & Fragrance Free Up to 100% Leakproof Soft as Cashmere
Pampers$57.97450 rev
Pampers Amore Size 2 (10-22 lbs) 120 Count Our Best Diaper Hypoallergenic & Fragrance Free Up to 100% Leakproof Soft as Cashmere
Pampers$40.12450 rev
The Honest Company Comfort Dry Disposable Daytime Diapers for Sensitive Skin Hypoallergenic Fragrance-Free Multi-Colored Giraffes + Barnyard Babies Club Box Size 2 (12-18 lbs) 72 Count
The Honest Company$25.782,613 rev
The Honest Company Comfort Dry Disposable Daytime Diapers Hypoallergenic Fragrance-Free Sensitive Skin Rose Blossom + Tutu Cute Club Box Size 2 (1218 lbs) 72 Count
The Honest Company$26.932,613 rev
Trending
90-day click momentum
MooMoo Baby Training Underwear for Boys and Girls Absorbent Toddler Training Pants Cotton Washable and Reusable 2T-7T 8 Packs
MooMoo Baby$31.284.5★
Pampers Amore Size 2 (10-22 lbs) 120 Count Our Best Diaper Hypoallergenic & Fragrance Free Up to 100% Leakproof Soft as Cashmere
Pampers$40.123.5★
Pampers Amore Size 2 (10-22 lbs) 186 Count Our Best Diaper Hypoallergenic & Fragrance Free Up to 100% Leakproof Soft as Cashmere
Pampers$57.973.5★
Pampers Diapers - Baby Dry - Size 2 234 Count Absorbent Disposable Infant Diaper (Packaging May Vary)
Pampers$54.074.7★
The Honest Company Comfort Dry Disposable Daytime Diapers for Sensitive Skin Hypoallergenic Fragrance-Free Multi-Colored Giraffes + Barnyard Babies Club Box Size 2 (12-18 lbs) 72 Count
The Honest Company$25.784.2★
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Soft and absorbent”
“Good absorbency”
“No leak at all”
“The fit is secure yet flexible enough to allow movement and play”
“worth it”
“good quality”
“durable and nice hold for night time use”
“Comfortable Fit”
“suprisingly lightweight to be sucha durable”
“dont give my baby any rashes”
What buyers complain about
“they leak”
“Strong smell”
“Bad absorbency”
“very bad diapers”
“causes diaper rash”
“it is abit shorter”
“I dont think the price is reasonable”
“thickness is below par”
“Also, When I change baby, her skin feels wet so I am not sure how these are more absorbent”
“The glue is hard”
Top return reasons
Common questions
- Is overnight diapers size 3 profitable to sell on Amazon United States?
- The niche generates $11.6M/yr across 11 tracked products. 3 of 3 products launched in the last 360 days are still selling. 90-day search growth is -6.4%. Flapen's verdict: Worth a look (57/100).
- How competitive is the overnight diapers size 3 niche?
- 3 brands and 21 sellers compete. The top 5 products take 77% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in overnight diapers size 3?
- Top complaints mined from reviews: Leak-Proof, Smell, Absorbency. The return rate is 1.7%.
- What does it cost to enter the overnight diapers size 3 niche?
- Listings span $25.78–$64.23; the average listing price is $38.77 (sweet spot $15–$100). The average incumbent carries 32,612 reviews — the moat a new listing must climb.
Related niches in Baby Products
- 64refrigerator lockLaunch it
- 64coterie diapers size 2Launch it
- 65baby car seat fanWorth a look
- 65water baby carrierWorth a look
- 65sunscreen brushWorth a look
- 65tummy time toysWorth a look