Best 100% Polyurethane Foam Mattresses and Foam Options
A 100% polyurethane foam mattress can mean a complete sleeping surface made with polyurethane foam or a foam layer used in a custom sleep setup. Among these options, the Japanese floor futon specifically lists 100% polyurethane foam; the Casper and Dreamfoam listings describe foam mattresses but do not specify that every layer is polyurethane. The picks below also include two cut-to-size upholstery foams for people building or replacing a cushion rather than buying a finished mattress.
| Product | Best for | What to know |
|---|---|---|
| Japanese Floor Futon | Floor sleeping and guests | Lists a 100% high-density polyurethane foam pad |
| Casper Element Full | A finished medium-feel mattress | Breathable open-cell foam; material composition is not fully specified |
| DREAMFOAM Copperflex Essential | Buyers seeking a 6-inch mattress | Gel memory foam and open-cell cooling features |
| Custom Polyurethane Upholstery Foam | Made-to-fit cushion or DIY projects | Custom dimensions, densities, and shapes |
| FOAMYFOAM High Density Foam | Thin cushion replacement | One-inch-thick upholstery foam |
Japanese Floor Futon Mattress
Best for: Adults who want a portable floor mattress for a guest room, dorm, or other sleeping area. This queen-size option measures 60 by 80 inches and is described as having a 100% high-density polyurethane foam pad.
The product uses a nine-layer structure with five padding layers. Its three-dimensional lattice stitching is designed to keep the filling in place and create an even surface. These details make it the most direct match in this selection for shoppers specifically searching for a mattress with polyurethane foam.
Limitation: It is a floor futon, not a conventional bed mattress. Consider whether its floor-based setup suits your room and sleeping preferences.
Casper Sleep Element Full Mattress
Best for: Shoppers seeking a finished full mattress with a medium feel. Casper describes it as suitable for different sleep styles and highlights motion isolation and breathable open-cell Flex Foam.
The listed materials include recycled polyester, polyester, upcycled cotton, rayon, and Lycra. The foam is described as breathable, with airflow intended to help reduce heat buildup. This makes it a relevant comparison for buyers considering an all-foam mattress, even though the supplied details do not identify the foam as 100% polyurethane.
Limitation: The listing does not provide a complete foam-layer composition in the supplied product information. Choose it for its stated feel and airflow features, not as a confirmed 100% polyurethane mattress.
DREAMFOAM Copperflex Essential Mattress
Best for: Buyers comparing a six-inch foam mattress, including people outfitting a bunk bed or RV sleep nook. The supplied product name identifies a six-inch Full XL mattress with gel memory foam.
The listing describes gel swirl memory foam and open-cell technology as features intended to disperse body heat. It also mentions a sewn-on Nano Stain Terminator protector. Those details make it a better fit for shoppers who prioritize a slimmer profile and the stated cooling and stain-protection features.
Limitation: The product information lists several thickness and firmness combinations, while the supplied name identifies the six-inch version. Confirm the selected size and configuration before ordering. The provided details do not confirm that the entire mattress is 100% polyurethane.
Custom Polyurethane Upholstery Foam
Best for: DIY builders or homeowners replacing a cushion who need specific dimensions. Buyers can choose length, width, thickness, and medium or high density; custom shapes such as ovals and cylinders are also described.
This is upholstery foam, not a finished mattress. It may suit a custom mattress build or a cushion project when the buyer needs a particular fit. The listing gives a thickness range of one to 14 inches and notes that compressed foam may take up to five days to regain its shape after unpacking.
Limitation: The supplied information warns that dimensions may vary slightly, by about 0.25 to one inch. Allow for that tolerance when measuring a close-fitting space.
FOAMYFOAM High Density Upholstery Foam
Best for: Replacing or adding a thin layer to a seat, bench, or couch cushion. This listing is for a one-inch-thick piece measuring 30 inches wide by 72 inches long, with a stated density of 1.8 and compression rating of 44 ILD.
The manufacturer describes the foam as a firm option for upholstery and says other sizes may be available through custom cutting. Its measured dimensions make it more suitable for cushion work than for use as a standalone mattress.
Limitation: At one inch thick, it is not a complete mattress. Choose it only when that thickness and upholstery use match the project.
Buying Guide: Choosing Polyurethane Foam For Sleep
Do you need a finished mattress or a foam insert?
Choose a finished mattress or futon if you need a ready-to-use sleep surface. The Japanese futon is the clearest match for a stated 100% polyurethane foam pad. The Casper and DREAMFOAM options are finished foam mattresses, but their supplied descriptions do not establish that every component is polyurethane. Upholstery foam is intended for cushions or custom projects, so it may require a separate cover and a suitable support setup.
How should you compare size, thickness, and firmness?
Check the sleeping area or cushion measurements before choosing. The futon is queen size, while the DREAMFOAM listing identifies a six-inch Full XL model. For cut foam, compare the specified thickness and dimensions with your project, and note any stated size tolerances. Foam density and ILD are listed for the FOAMYFOAM sheet; the other product details do not provide comparable figures, so avoid assuming equal firmness from product names alone.
Does cooling or portability matter?
For a portable floor sleeping option, consider the futon. For airflow features, compare the Casper open-cell foam and the DREAMFOAM gel memory foam and open-cell technology. These are product descriptions, not guarantees that every sleeper will feel cool. If heat sensitivity is a priority, review the complete product specifications and consider your bedding and room conditions as well.
Frequently Asked Questions
Which option specifically lists 100% polyurethane foam?
The Japanese floor futon listing says it uses a 100% high-density polyurethane foam pad.
Are all foam mattresses made entirely of polyurethane?
Not necessarily. The supplied descriptions for the Casper and DREAMFOAM mattresses do not confirm that every layer is 100% polyurethane.
Can upholstery foam replace a mattress?
Upholstery foam is primarily listed for cushions and DIY projects. A buyer considering it for a sleep surface should assess the required dimensions, thickness, and support rather than treating it as a finished mattress.
How long can compressed custom foam take to expand?
The custom foam listing says it may take up to five days to return to its original shape and size after unpacking, and recommends unrolling it within 24 hours of delivery.
What should I measure before ordering foam?
Measure the available length, width, and thickness, then account for any stated dimension tolerance. For a mattress, also confirm the intended sleeping-space size and the exact model configuration.