closed cell foam
Skip itA small market ($87K/yr) — this niche doesn't clear our bar today.
Avg price
Incredible$28.83avg listing price — sweet spot $15–$100
Price range
Great$9.21–$74.32cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Good957.53avg incumbent reviews — the moat a new listing must climb
Returns
Good2.9%return rate — above 6% kills the launch gate
Brand share
Okay76%top-5 brand share — brands hold most of the demand
Growth
Okay+12.4%90-day search growth — must beat 0% to launch
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Competition
Okay65%top-5 click share — leaders hold, buyers still browse
Conversion
Okay2.2%search→purchase rate — share of searches ending in a sale
Market size
Bad$87K$87K/yr · 139K searches
Competition
The top 5 products take 65% of clicks — established leaders, but buyers still shop beyond them.Brands
13 falling
Sellers
18
Top-5 brand share
76%
Open market
19%
- Artilife37%
- Siless15%
- FOAMZZ12%
- VOISEN7%
- Treela5%
- AggSound5%
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 19 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Artilife Closed Cell Foam Roll Easy to Cut into Foam Sheets & Foam Pads for Sound Insulation Cushion & DIY Projects (1/2 T x 13 W x 60 L)
Artilife$24.454.5★873 rev
Foamzz by Big UGGLY High-Density Foam Panels Closed-Cell Insulation Foam Pads Black 12 X 12 X 1 (2 Pack)
FOAMZZ$18.234.6★123 rev
Siless Liner 157 (4 mm) mil 36 sqft Car Sound Deadening Closed Cell Foam & Heat Insulation mat - PE Foam Sound Deadener Material & Heat Barrier
Siless$44.914.5★3,473 rev
VOISEN Sound Deading Material for Cars 157 MIL (4 mm) 36 sqft Sound Deadening Mat Sound Deadening Car Sound Deadening Closed Cell Foam PE Foam Sound Deadener Material & Heat Barrier
VOISEN$36.044.6★381 rev
Treela 2 Pcs Customizable Polyethylene Foam Sheets 16x12x2 Black Thick Cuttable Foam Padding Inserts for Cases Polyethylene Block Sheet for Packing Toolbox Storage and Craft Pad
Treela$23.064.6★143 rev
Newest
by launch date
ToLanbbt Sponge Neoprene Foam Sheet with Adhesive - 1/4 Thick 12 x 59 Closed Cell Foam Rubber Roll Weatherproof Soundproof Padding for Automotive Cabinet Furniture Crafts DIY Black
ToLanbbt$15.1977 rev
ToLanbbt 8 PCS Adhesive Foam Padding Sheets Closed Cell Neoprene Foam Sheet 1/2 Thick 4 x 4 Self Stick Insulation Anti Vibration Pads Anti-Slip for Furniture Cars Speakers DIY
ToLanbbt$9.21210 rev
Storystore Foam Rubber Sheet with Adhesive 12 x 59 x 1/4 Inch Closed Cell Insulation Neoprene Foam Sheet Multi-Function Soundproof Weatherproof Foam Padding
Storystore$16.60185 rev
VOISEN Sound Deading Material for Cars 157 MIL (4 mm) 36 sqft Sound Deadening Mat Sound Deadening Car Sound Deadening Closed Cell Foam PE Foam Sound Deadener Material & Heat Barrier
VOISEN$36.04381 rev
FoamTouch 1 Thick x 24 Wide x 96 Long Charcoal High Density Foam Ideal for Foam Padding Seat Replacement Chair Cushion Replacement Wheelchair Seat Cushion and More
FoamTouch$29.77107 rev
Trending
90-day click momentum
Artilife Closed Cell Foam Roll Easy to Cut into Foam Sheets & Pads for Sound Insulation Cushion & DIY Projects (1/8 T x 13 W x 80 L)
Artilife$12.924.5★
Artilife Closed Cell Foam Roll Easy to Cut into Foam Sheets & Foam Pads for Sound Insulation Cushion & DIY Projects (1/8 T x 17 W x 80 L)
Artilife$17.184.5★
Siless LinerPRO 2in1 200 mil (5mm) 36 sqft Car Sound Deadening & Heat Insulation Closed Cell Foam - PE Foam Sound Deadener
Siless$74.324.6★
VOISEN Sound Deading Material for Cars 157 MIL (4 mm) 36 sqft Sound Deadening Mat Sound Deadening Car Sound Deadening Closed Cell Foam PE Foam Sound Deadener Material & Heat Barrier
VOISEN$36.044.6★
Artilife Closed Cell Foam Roll Easy to Cut into Foam Sheets & Foam Pads for Sound Insulation Cushion & DIY Projects (1/2 T x 13 W x 60 L)
Artilife$24.454.5★
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +12.4% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.5×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Sticks good”
“So far, excellent, was extremely easy to work with”
“As advertised”
“Easy to use”
“Worth it”
“Easy Install”
“This material is easy to work with”
“It works well”
“Quiet”
“Fit head to head perfectly”
What buyers complain about
“The adhesive didnt seem strong enough”
“Not good sound deadening”
“Actually only 1/16th inch thick”
“Its not worth the cost”
“Very poor quality sound deadening”
“Not high quality”
“are from improper installation”
“This product doesnt work”
“Not closed cell foam”
“Not what it should be”