4 Inch Memory Foam Mattress Topper King
MaybeThe top 5 brands take only 44% of clicks. But demand is soft, at -21.2% this quarter, so 4 Inch Memory Foam Mattress Topper King is a Maybe.
- Flapen Score
- 56 / 100Top 19% of 11,240 Home & Kitchen niches · +7 vs the category median of 4956
- Market size
- $209K/yr44K searches / yr
- 90-day growth
- -21.2%search demand this quarter
- Competition
- 31%top-5 click share · 35 brands · 31 sellers
Flapen Score
4 Inch Memory Foam Mattress Topper King against its category
The dotted line is the Home & Kitchen average. Past it, 4 Inch Memory Foam Mattress Topper King is stronger. Inside it, weaker.
Market
The 4 Inch Memory Foam Mattress Topper King market on Amazon at a glance
Shoppers on Amazon United States searched for 4 Inch Memory Foam Mattress Topper King 44K times last year and spent an estimated $209K. The top 5 brands take 44% of clicks. Demand peaks in Sep. Flapen scores it 56 out of 100, a Maybe.
01 · Demand
An estimated 4.6% of those searches ended in a purchase.
Shoppers searched for this 44K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 4.6% of those searches ended in a purchase. Searches in the last 90 days moved -21.2% against the 90 days before. Searches, conversion and average price together put the market at an estimated $209K a year.
- Searches, last 12 months
- 44K
- Growth, 90 days vs prior 90
- -21.2%
- Conversion, latest week
- 4.6%
- Market size, estimated
- $209Ka year
- Peak month
- September1.6× the quietest month
- Top search term
- 4 inch memory foam mattress topper king23K searches a year
02 · Price
A sale here is worth $103.95.
Listings sell for $103.95 on average, from $41.50 to $207.08. Amazon reports units sold in ranges. This niche sold 1K to 2K a year. The average listing sells 0 to 100 of them. At $103.95 that is $0 to $10K a year per listing.
- Average price
- $103.95above the $15 to $100 sweet spot
- Price range
- $41.50–$207.08
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 1K–2K
- Units per listing a year
- 0–100
- Revenue per listing a year
- $0–$10K
- Returns
- 2.6%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is ads and reviews.
92% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 19.4% of listings are out of stock. The average listing ranks #145 within Mattress Pads & Toppers. It carries 8,136 reviews at 4.20 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 92%
- Prime listings
- 100%
- Out of stock, average day
- 19.4%
- Average rank
- #145in Mattress Pads & Toppers
- Average rating
- 4.20 starsAmazon United States average 4.42 stars
- Average reviews
- 8,136per listing
- Listings tracked
- 59
04 · Newcomers
18 of last year's 29 launches cleared the first-year sales bar.
29 products launched here in the last 12 months. 18 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 33 months on average, so a newcomer is not facing entrenched names.
- Launched, last 12 months
- 29
- Successful launches
- 18Amazon's first-year sales bar
- Average brand age
- 33 months
Products
Top 4 Inch Memory Foam Mattress Topper King products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 29, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Sweetcrispy Mattress Topper King Memory Foam 4 Inch Cooling Pad
- Price
- $71.04
- Rating
- 4.0/5
- Reviews
- 186
- Age
- 1y ago
MASVIS King Size Dual Layer 4 Inch Memory Foam Mattress Topper 2 Inch Gel Memory Foam and 2 Inch Cooling Pillow Top Mattress Pad Cover for Back Pain Medium Support
- Price
- $112.60
- Rating
- 4.3/5
- Reviews
- 5,499
- Age
- 3y ago
COONP King Mattress Topper Extra Thick Pillowtop Cooling Plush Mattress Pad Cover Cotton Top Bed Topper Protector with 8-21 Inch Deep Pocket
- Price
- $77.30
- Rating
- 4.4/5
- Reviews
- 34,535
- Age
- 6y ago
BEDLORE King Mattress Topper Viscose Derived from Bamboo Thick Pillow Top Mattress Pad with Stretchable Pockets for 6-18 Mattress Soft Breathable Mattress Topper for Back Pain Relief(Dark Gray)
- Price
- $53.28
- Rating
- 4.4/5
- Reviews
- 12,633
- Age
- 1y ago
WhatsBedding 4 Inch Memory Foam Mattress Topper King for Back Pain Filled with Fluffy Gel Memory Foam Soft and Thick Supportive Mattress Topper 4 Stable Anchor Elastic Straps
- Price
- $78.97
- Rating
- 3.6/5
- Reviews
- 22
- Age
- 3mo ago
Trending
estimated 90-day click momentum
WhatsBedding 4 Inch Memory Foam Mattress Topper King for Back Pain Relief
- Price
- $149.42
- Rating
- 3.6/5
- Reviews
- 2
- Age
- 2mo ago
Missleep Dual Layer 4 Inch Memory Foam Mattress Topper King Size 2 Inch Cooling Gel Memory Foam 2 Inch Soft Pillow Top Pad Breathable Mattress Cover for Back Pain Relief Deep Elastic Pocket White
- Price
- $119.57
- Rating
- 4.0/5
- Reviews
- 29
- Age
- 2mo ago
WhatsBedding 4 Inch Memory Foam Mattress Topper King for Back Pain Relief Filled with Breathable Gel Memory Foam Supportive Pillow Top Mattress Topper
- Price
- $139.46
- Rating
- 5.0/5
- Reviews
- 19
- Age
- 1mo ago
WhatsBedding 4 Inch Memory Foam Mattress Topper King for Back Pain Filled with Fluffy Gel Memory Foam Soft and Thick Supportive Mattress Topper 4 Stable Anchor Elastic Straps
- Price
- $78.97
- Rating
- 3.6/5
- Reviews
- 22
- Age
- 3mo ago
IULULU Mattress Topper King Size 4 Inch Gel Memory Foam Bed Topper
- Price
- $66.67
- Rating
- 4.4/5
- Reviews
- 9,570
- Age
- 2mo ago
Newest
by launch dateWhatsBedding 4 Inch Memory Foam Mattress Topper King for Back Pain Relief Filled with Breathable Gel Memory Foam Supportive Pillow Top Mattress Topper
- Price
- $139.46
- Rating
- 5.0/5
- Reviews
- 19
- Age
- 1mo ago
IULULU Mattress Topper King Size 4 Inch Gel Memory Foam Bed Topper
- Price
- $66.67
- Rating
- 4.4/5
- Reviews
- 9,570
- Age
- 2mo ago
WhatsBedding 4 Inch Memory Foam Mattress Topper King for Back Pain Relief
- Price
- $149.42
- Rating
- 3.6/5
- Reviews
- 2
- Age
- 2mo ago
Missleep Dual Layer 4 Inch Memory Foam Mattress Topper King Size 2 Inch Cooling Gel Memory Foam 2 Inch Soft Pillow Top Pad Breathable Mattress Cover for Back Pain Relief Deep Elastic Pocket White
- Price
- $119.57
- Rating
- 4.0/5
- Reviews
- 29
- Age
- 2mo ago
WhatsBedding 4 Inch Memory Foam Mattress Topper King for Back Pain Filled with Fluffy Gel Memory Foam Soft and Thick Supportive Mattress Topper 4 Stable Anchor Elastic Straps
- Price
- $78.97
- Rating
- 3.6/5
- Reviews
- 22
- Age
- 3mo ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 31% of clicks, no more. An open shelf where new products get seen.
Brands
35 falling
Sellers
31
Est. top-5 brand share
44%
Top 20: 86%
Est. top-5 click share
31%
Top 20: 66%
Open market
50%
- WhatsBedding13%
- Sweetcrispy11%
- Niagara Sleep Solution7%
- BEDLORE7%
- MASVIS6%
- COONP5%
Demand
4 Inch Memory Foam Mattress Topper King search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Sep · busiest ÷ quietest = 1.6×
Search terms
Top 4 Inch Memory Foam Mattress Topper King search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- 4 inch memory foam mattress topper king23K/yr
- 4 inch king mattress topper11K/yr
- king size down mattress topper10K/yr
Reviews and returns
What reviews say buyers love and hate about 4 Inch Memory Foam Mattress Topper King
We read the reviews and the return reasons for every product selling here.
“Not as thick as you think”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
15 topics
Keep looking
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Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common 4 Inch Memory Foam Mattress Topper King questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data