---
title: "Foam Padding 4 Inch Thick — $170K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/arts-crafts-sewing/foam-padding-4-inch-thick"
last_updated: "2026-08-05T22:28:54.137Z"
locale: en
meta:
description: "Niche score 54/100 · $170K/yr market · 166K searches/yr · $32.58 avg price. A small market ($170K/yr) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 54/100 · $170K/yr market · 166K searches/yr · $32.58 avg price. A small market ($170K/yr) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Foam Padding 4 Inch Thick — $170K/yr Amazon US Niche (2026) - Flapen"
---
# **foam padding 4 inch thick**
**Worth a look**
Shows a sweet-spot price point ($32.58 avg), but a small market ($170K/yr) keeps it on the watch list.
Market size 35Growth 39Conversion 39Competition 76Returns 67Price range 88Avg price 95Brand share 64Review moat 38Quality gap 40
**Avg price**
**Incredible****$32.58**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$10.67–$61.66**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Competition**
**Great****39%**
top-5 click share — an open shelf
**Returns**
**Good****2.3%**
return rate — above 5% kills the launch gate
**Brand share**
**Good****67%**
top-5 brand share — brands hold most of the demand
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Growth**
**Okay****+11.1%**
90-day search growth — must beat 0% to launch
**Conversion**
**Okay****3.1%**
search→purchase rate — share of searches ending in a sale
**Review moat**
**Okay****2,730.58**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Okay****$170K**
$170K/yr · 166K searches
According to Flapen's Amazon United States niche tracking, foam padding 4 inch thick is a $170K/yr Amazon United States market (166K searches/yr). The top 5 brands hold 67% of demand. Demand peaks in Apr. Verdict: Worth a look — 54/100.
Data updated Jul 18, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **foam padding 4 inch thick market data**
- **Units sold / yr**
- **6K–8K**
- avg 100–250/product
- **Revenue / yr**
- **$195K–$261K**
- units × avg price
- **Conversion rate**
- **3.1%**
- **Avg BSR**
- **#89**
- **Page quality**
- **0%**
- **Prime**
- **71%**
- **Sponsored**
- **96%**
- **Out of stock**
- **2.2%**
- **Avg brand age**
- **35 months**
- **Avg seller age**
- **180 days**
## **Competition & brand share**
Clicks spread well past the top 5 (39% combined) — an open shelf where new products get seen.
**Brands**
**29 **▲rising
**Sellers**
**34**
**Top-5 brand share**
**67%**
Top 20: 95%
**Top-5 click share**
**39%**
Top 20: 75%
**Open market**
**28%**
- GoTo Foam23% - FOAMYFOAM21% - FoamTouch11% - AK TRADING CO.7% - Coaseb6% - Foamma5%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +11.1% search growth over the last 90 days.
4K3KSpike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Apr · busiest ÷ quietest = 1.8×
[**Open Trend **](https://flapen.com/research/us/arts-crafts-sewing/foam-padding-4-inch-thick/trend)
## **Top foam padding 4 inch thick search terms**
- **4 inch foam**18K/yr+28.3%2.7% conv. - **foam cushions for chairs**15K/yr+11.2%1.1% conv. - **upholstery foam 4 inch**15K/yr+16.2%2.9% conv. - **4 inch foam pad**9K/yr+50.4%1.8% conv. - **foam cushion 4 inch thick high density**19K/yr-19.8%1.8% conv. - **2 inch high density foam**9K/yr+11.4%2.5% conv. - **foam padding 4 inch thick**13K/yr-16.3%2.0% conv. - **cushion foam 4 inch thick high density**8K/yr+12.2%2.9% conv. - **foam rubber padding 4 inch thick**11K/yr-23.0%3.1% conv. - **4 foam pad**6K/yr+29.6%3.3% conv. [**All search terms **](https://flapen.com/research/us/arts-crafts-sewing/foam-padding-4-inch-thick/search-terms)
## **Top foam padding 4 inch thick 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%3%$5K6%$10K9%$15K12%$20K101001K10K100K 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**GoTo Foam 4 Height x 24 Width x 72 Length 44ILD (Firm) Upholstery Cushion Made in USA**GoTo Foam**$34.84**4.6★16,685 rev](https://www.amazon.com/dp/B07S7ZQQVY) [2**FOAMYFOAM High Density 4 inch Thick 24 inch Wide 24 inch Long Upholstery Foam Cushion Replacement**FOAMYFOAM**$25.14**4.4★444 rev](https://www.amazon.com/dp/B0BM51T652) [3**FoamTouch High Density Upholstery Foam (4 x 24 x 72) 1.79LB Density-45LB ILD Made in USA Ideal for Couch Cusions Chair Cushions Bench Cushions and Varity of Upholstery Projects**FoamTouch**$35.89**4.6★375 rev](https://www.amazon.com/dp/B0DQXC8L54) [4**AK Trading CO. AK-Trading Upholstery High Density 4 Height x 24 Width x 72 Length-Home or Commercial Use Seat Replacement Cushion-Made in USA Foam (FOAM-HD-4x24x72)**AK TRADING CO.**$45.66**4.6★1,836 rev](https://www.amazon.com/dp/B078SHJQWH) [5**Coaseb Custom Polyurethane Upholstery Foam Cut to Size Couch Cushion Replacement Foam Padding for Chairs Sofas Benches Seat Cushions & DIY Projects High or Medium Density CertiPUR-US Certified**Coaseb**$53.51**4.5★305 rev](https://www.amazon.com/dp/B0CY7C1YV4)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Vicatiful High-Density Upholstery Foam Padding (4 x 24 x 72)Memory Foam for Couch Seat Cushion Replacement Chair Foam Square Padding for Seats**Vicatiful**$34.27**61 rev9mo ago](https://www.amazon.com/dp/B0FX3TDF7R) [**SmartFoam HD Custom Cut Foam for Mattresses & Cushions High Density Upholstery Foam for DIY Projects Beds & Sofas Premium Free Choice of Comfort Levels (Medium or Firm)**SmartFoam**$45.28**70 rev10mo ago](https://www.amazon.com/dp/B0FRCTF28X) [**ColourTree Custom High-Density Foam (4 Thickness) Firm-to-Medium for Sofa Replacement RV Cushions Camping Mattresses & Couch Seating**ColourTree**$60.45**12 rev1y ago](https://www.amazon.com/dp/B0FFKW6KKL) [**FoamTouch High Density Upholstery Foam (4 x 24 x 72) 1.79LB Density-45LB ILD Made in USA Ideal for Couch Cusions Chair Cushions Bench Cushions and Varity of Upholstery Projects**FoamTouch**$35.89**375 rev1y ago](https://www.amazon.com/dp/B0DQXC8L54) [**Lokex Cut to Size Foam Custom Sofa Seat Replacement Cushion and Upholstery Foam Replaceable High Density Foam**Lokex**$61.66**195 rev2y ago](https://www.amazon.com/dp/B0D564C7RC)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Everyday Yoga Foam Yoga Block 4 Inch - High-Density EVA Support Block for Stability Balance & Flexibility Lightweight Durable & Comfortable - Merlot**Everyday Yoga**$12.56**4.6★**▲ 274%**](https://www.amazon.com/dp/B0CGLNSMKY) [**ProsourceFit Exercise Balance Pad Non-Slip Cushioned Foam Mat & Knee Pad for Fitness and Stability Training Yoga Physical Therapy 15.5x12.75 Black**ProsourceFit**$24.30**4.8★**▲ 226%**](https://www.amazon.com/dp/B0766565HG) [**ColourTree Custom High-Density Foam (4 Thickness) Firm-to-Medium for Sofa Replacement RV Cushions Camping Mattresses & Couch Seating**ColourTree**$60.45**4.6★**▲ 158%**](https://www.amazon.com/dp/B0FFKW6KKL) [**FOAMYFOAM High Density 2 inch Thick 18 inch Wide 72 inch Long Upholstery Foam Cushion Replacement**FOAMYFOAM**$23.93**4.6★**▲ 145%**](https://www.amazon.com/dp/B0BVGTRP4Z) [**FoamTouch High Density Upholstery Foam (4 x 24 x 72) 1.79LB Density-45LB ILD Made in USA Ideal for Couch Cusions Chair Cushions Bench Cushions and Varity of Upholstery Projects**FoamTouch**$35.89**4.6★**▲ 53%**](https://www.amazon.com/dp/B0DQXC8L54)
**~~View all trending →~~**
## **What buyers say about foam padding 4 inch thick**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Cushion**17%
*“Excellent cushion”*
**Comfort-Overall**13%
*“It's comfortable”*
**Quality-Overall**12%
*“Excellent Quality”*
**Size-Overall**8%
*“Fit like a charm”*
**Advertised Vs Actual Product**7%
*“As described”*
**Foam**7%
*“The memory foam is very comfortable”*
**Value For Money**5%
*“Great deal”*
**Soft Feel**3%
*“soft fabric”*
**Thickness**3%
*“This pad is thick, sturdy and soft enough to be more comfortable than standing on bare or carpeted floor”*
**Balance/Stability**2%
*“Good for balance”*
### **What buyers complain about **
**Hard Feel**15%
*“Hard as a Rock”*
**Comfort-Overall**13%
*“Hard and uncomfortable”*
**Size-Overall**9%
*“Too big”*
**Cushion**9%
*“no cushion”*
**Thickness**6%
*“It's really thick”*
**Advertised Vs Actual Product**4%
*“Deceptive advertising”*
**Value For Money**4%
*“Not worth the price charged”*
**Quality-Overall**3%
*“Expensive garbage”*
**Ease Of Use**2%
*“Cant use it”*
**Functionality-Overall**1%
*“Hit or Miss”*
### **Top return reasons **
**Size-Overall**27%
**Cushion**27%
**Comfort-Overall**7%
**Thickness**6%
**Advertised Vs Actual Product**6%
**Hard Feel**3%
**Functionality-Overall**3%
**Balance/Stability**3%
**Value For Money**2%
**Material Quality**2%
## **Common questions**
- **Is foam padding 4 inch thick profitable to sell on Amazon United States?**
- The niche generates $170K/yr across 55 tracked products. 5 of 8 products launched in the last 360 days are still selling. 90-day search growth is +11.1%. Flapen's verdict: Worth a look (54/100).
- **How competitive is the foam padding 4 inch thick niche?**
- 29 brands and 34 sellers compete. The top 5 products take 39% of clicks and top 5 brands hold 67% of demand.
- **What do buyers complain about in foam padding 4 inch thick?**
- Top complaints mined from reviews: Hard Feel, Comfort-Overall, Size-Overall. The return rate is 2.3%.
- **When does demand for foam padding 4 inch thick peak?**
- Demand peaks in Apr; the busiest month runs 1.8× the quietest.
- **What does it cost to enter the foam padding 4 inch thick niche?**
- Listings span $10.67–$61.66; the average listing price is $32.58 (sweet spot $15–$100). The average incumbent carries 2,731 reviews — the moat a new listing must climb.
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