---
title: "Diapers Size 5 — $21.0M/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/baby-products/diapers-size-5"
last_updated: "2026-08-09T12:57:57.949Z"
locale: en
meta:
description: "Niche score 51/100 · $21.0M/yr market. Brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 51/100 · $21.0M/yr market. Brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Diapers Size 5 — $21.0M/yr Amazon US Niche (2026) - Flapen"
---
# **diapers size 5**
**Worth a look**
Shows a $21.0M/yr market, but brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list.
Market size 100Growth 27Conversion 97Competition 11Returns 98Price range 88Avg price 95Brand share 0Review moat 2Quality gap 18
**Market size**
**Incredible****$21.0M**
$21.0M/yr · 3.6M searches
**Returns**
**Incredible****0.5%**
return rate — above 5% kills the launch gate
**Conversion**
**Incredible****15.2%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Incredible****$38.09**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$10.05–$63.05**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Growth**
**Okay****+1.7%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Competition**
**Bad****86%**
top-5 click share — a locked-up shelf
**Review moat**
**Bad****46,868.3**
avg incumbent reviews — the moat a new listing must climb
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, diapers size 5 is a $21.0M/yr Amazon United States market (3.6M searches/yr). The top 5 brands hold 100% of demand. Verdict: Worth a look — 51/100.
Data updated Jul 12, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **diapers size 5 market data**
- **Units sold / yr**
- **500K–600K**
- avg 60,000–80,000/product
- **Revenue / yr**
- **$19.0M–$22.9M**
- units × avg price
- **Conversion rate**
- **15.2%**
- **Avg BSR**
- **#7**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **40%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **54 months**
- **Avg seller age**
- **134 days**
## **Competition & brand share**
The top 5 products capture 86% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**3 **▲rising
**Sellers**
**66**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**86%**
Top 20: 100%
**Open market**
**0%**
- HUGGIES61% - Pampers36% - MooMoo Baby3%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +1.7% search growth over the last 90 days.
125K75KPrime Day '24Spike '24Holiday '24Spike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.6×
[**Open Trend **](https://flapen.com/research/us/baby-products/diapers-size-5/trend)
## **Top diapers size 5 search terms**
- **diapers size 5**922K/yr-2.5%4.3% conv. - **size 5 diapers**696K/yr+0.5%4.8% conv. - **pampers size 5**810K/yr-26.2%3.8% conv. - **huggies size 5**484K/yr+9.8%11.6% conv. - **pampers swaddlers size 5**190K/yr+162.2%1.1% conv. - **millie moon diapers size 5**81K/yr+2.9%0.3% conv. - **diaper size 5**52K/yr+11.1%2.9% conv. - **size 5 pampers**44K/yr+16.2%4.2% conv. - **huggies size 5 diapers**51K/yr-8.2%12.5% conv. - **pampers baby dry**42K/yr-0.3%0.5% conv. [**All search terms **](https://flapen.com/research/us/baby-products/diapers-size-5/search-terms)
## **Top diapers size 5 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%10%$2.1M20%$4.2M30%$6.3M40%$8.4M1K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 10 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Huggies Size 5 Diapers Little Movers Baby Diapers Size 5 (27+ lbs) 132 Count (2 Packs of 66) Packaging May Vary**HUGGIES**$52.60**4.8★46,925 rev](https://www.amazon.com/dp/B0DKYWMHDX) [2**Pampers Diapers - Baby Dry - Size 5 132 Count Absorbent Disposable Infant Diaper (Packaging May Vary)**Pampers**$42.79**4.7★97,820 rev](https://www.amazon.com/dp/B07SWMVDBD) [3**Huggies Size 5 Diapers Little Movers Baby Diapers Size 5 (27+ lbs) 104 Count Packaging May Vary**HUGGIES**$40.51**4.8★46,925 rev](https://www.amazon.com/dp/B07W1J2FLC) [4**Pampers Diapers - Swaddlers 360 - Size 5 116 Count up to 100% Leakproof Comfy Dry Fit Designed for Easy Changes Pull On Baby Diaper (Packaging May Vary)**Pampers**$48.38**4.5★1,416 rev](https://www.amazon.com/dp/B0CVGXFM98) [5**Huggies Size 5 Diapers Little Movers Baby Diapers Size 5 (27+ lbs) 58 Count Packaging May Vary**HUGGIES**$26.25**4.8★46,925 rev](https://www.amazon.com/dp/B08QRPJ9YM)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Huggies Size 5 Diapers Little Movers Baby Diapers Size 5 (27+ lbs) 58 Count Packaging May Vary**HUGGIES**$26.25**46,925 rev1y ago](https://www.amazon.com/dp/B08QRPJ9YM) [**Huggies Size 5 Diapers Little Movers Baby Diapers Size 5 (27+ lbs) 132 Count (2 Packs of 66) Packaging May Vary**HUGGIES**$52.60**46,925 rev1y ago](https://www.amazon.com/dp/B0DKYWMHDX) [**Pampers Diapers - Swaddlers 360 - Size 5 116 Count up to 100% Leakproof Comfy Dry Fit Designed for Easy Changes Pull On Baby Diaper (Packaging May Vary)**Pampers**$48.38**1,416 rev2y ago](https://www.amazon.com/dp/B0CVGXFM98) [**MooMoo Baby Training Underwear for Boys and Girls Absorbent Toddler Training Pants Cotton Washable and Reusable 2T-7T 8 Packs**MooMoo Baby**$31.28**17,365 rev4y ago](https://www.amazon.com/dp/B0B4DHC5V3) [**Pampers Diapers - Cruisers 360 - Size 5 100 Count Babyproof up to 100% Leakproof Pull-On Diaper**Pampers**$37.92**27,841 rev5y ago](https://www.amazon.com/dp/B08PX4Y34Z)
**~~View all new products →~~**
### **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**$31.28**4.5★**▲ 245%**](https://www.amazon.com/dp/B0B4DHC5V3) [**Pampers Diapers - Baby Dry - Size 5 132 Count Absorbent Disposable Infant Diaper (Packaging May Vary)**Pampers**$42.79**4.7★**▲ 35%**](https://www.amazon.com/dp/B07SWMVDBD) [**Pampers Diapers - Baby Dry - Size 5 78 Count Absorbent Disposable Infant Diaper (Packaging May Vary)**Pampers**$28.08**4.7★**▲ 22%**](https://www.amazon.com/dp/B00FMWX6T8) [**Huggies Size 5 Diapers Little Movers Baby Diapers Size 5 (27+ lbs) 58 Count Packaging May Vary**HUGGIES**$26.25**4.8★**— 2%**](https://www.amazon.com/dp/B08QRPJ9YM) [**Pampers Diapers - Swaddlers 360 - Size 5 116 Count up to 100% Leakproof Comfy Dry Fit Designed for Easy Changes Pull On Baby Diaper (Packaging May Vary)**Pampers**$48.38**4.5★**— 3%**](https://www.amazon.com/dp/B0CVGXFM98)
**~~View all trending →~~**
## **What buyers say about diapers size 5**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Leak-Proof**19%
*“reliable leak protection”*
**Quality-Overall**18%
*“Great pampers quality as expected”*
**Value For Money**10%
*“Definitely worth the price”*
**Absorbency**10%
*“absorbent”*
**Size-Overall**8%
*“They fit snugly without being too tight”*
**Comfort-Overall**6%
*“comfortable”*
**Stretchability/Expandability/Elasticity**6%
*“the waistband is stretchy”*
**Soft Feel**4%
*“have been gentle on my children's skin”*
**Advertised Vs Actual Product**4%
*“Product is exactly as advertised”*
**Moist/Dry**2%
*“Even during long days or naps, they keep my child dry and comfortable”*
### **What buyers complain about **
**Leak-Proof**24%
*“Not leak proof”*
**Quality-Overall**10%
*“quality is different”*
**Functionality-Overall**9%
*“Didnt work”*
**Velcro Quality**7%
*“Horrible velcro part keeps breaking off dispite how gentle”*
**Product Condition**7%
*“Code inside the diaper was used”*
**Thigh Fit**7%
*“these were so tight on her legs”*
**Allergies**7%
*“Skin Irritation”*
**Water Resistance**3%
*“fluid leaks through immediately so definitely not waterproof”*
**Hard Feel**3%
*“Not soft enought as target one”*
**Size-Overall**3%
*“Runs small, especially around the legs”*
### **Top return reasons **
**Size-Overall**69%
**Advertised Vs Actual Product**7%
**Value For Money**4%
**Leak-Proof**3%
**Age Suitability**3%
**Absorbency**2%
**Smell**2%
**Thigh Fit**1%
**Functionality-Overall**1%
**Quality-Overall**1%
## **Common questions**
- **Is diapers size 5 profitable to sell on Amazon United States?**
- The niche generates $21.0M/yr across 10 tracked products. 90-day search growth is +1.7%. Flapen's verdict: Worth a look (51/100).
- **How competitive is the diapers size 5 niche?**
- 3 brands and 66 sellers compete. The top 5 products take 86% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in diapers size 5?**
- Top complaints mined from reviews: Leak-Proof, Quality-Overall, Functionality-Overall. The return rate is 0.5%.
- **When does demand for diapers size 5 peak?**
- Demand is steady year-round — the busiest month runs 1.6× the quietest.
- **What does it cost to enter the diapers size 5 niche?**
- Listings span $10.05–$63.05; the average listing price is $38.09 (sweet spot $15–$100). The average incumbent carries 46,868 reviews — the moat a new listing must climb.
## **Related niches in Baby Products**
- 65 [**baby car seat fan**](https://flapen.com/research/us/baby-products/baby-car-seat-fan)$31K/yr+151.9%**Worth a look**- 65 [**tummy time toys**](https://flapen.com/research/us/baby-products/tummy-time-toys)$11.8M/yr-9.5%**Worth a look**- 65 [**sunscreen brush**](https://flapen.com/research/us/baby-products/sunscreen-brush)$615K/yr+314.7%**Worth a look**- 65 [**toddler step stool**](https://flapen.com/research/us/baby-products/toddler-step-stool)$4.1M/yr-7.9%**Worth a look**- 65 [**training diapers 2t-3t**](https://flapen.com/research/us/baby-products/training-diapers-2t-3t)$6.1M/yr+8.7%**Launch it**- 65 [**water baby carrier**](https://flapen.com/research/us/baby-products/water-baby-carrier)$431K/yr+176.5%**Worth a look**[**All Baby Products niches **](https://flapen.com/research/us/baby-products)