Yes
Normally you will find a vinyl cover over a foam pad for patio furniture cushions. Both materials are weather and water resistant making them ideal for the patio.
TheFoamFactory.com offers various foam options for your seat cushions. You can order in various sizes and shapes for whatever your project may require.
I think it's called "Foam"
Pillows, mattresses, cushions, seat pads in furniture
Higher priced sofas with single removable cushions tend to use memory foam for their soft but still firmly holding aspects. The memory foam in the cushions will give the customer a soft feeling while briefly giving him the hold he waits for. One should not go for cheap memory foam sofas since they will be flattened out after a short time. Investing some money in the first place will keep problems away.
Burning foam seat cushions releases toxic fumes and particles such as carbon monoxide, dioxins, and other harmful chemicals. These fumes can pose serious health risks when inhaled and can also damage the wood stove and chimney. It is best to dispose of foam seat cushions safely and in accordance with local regulations.
To effectively clean and maintain foam dining room chair cushions, start by regularly vacuuming or shaking out the cushions to remove debris. Spot clean any stains with a mild detergent and water solution, then allow the cushions to air dry completely. To maintain their shape and comfort, rotate the cushions regularly and avoid sitting on them for extended periods of time. Additionally, consider using cushion covers or protectors to prevent spills and stains.
Memory foam was invented by NASA in the 1960s as a way to improve the safety and comfort of aircraft cushions. The material was designed to provide support and cushioning to astronauts during take-off and landing. Over time, memory foam became popular in consumer products such as mattresses and pillows due to its pressure-relieving properties.
Instead of purchasing a complete cushion made out of memory foam, it is possible to add one or two memory foam toppers to a regular foam cushion. This will give the support but will not be as hot or as prone to permanent indentations as memory foam.
Cushions come in various types, including seat cushions, which provide comfort for chairs and benches; throw pillows, used for decorative purposes on sofas and beds; and outdoor cushions, designed to withstand weather conditions for patio furniture. Additionally, there are orthopedic cushions that offer support for posture and pain relief, and memory foam cushions that conform to the body's shape. Specialty cushions, like travel pillows, are also available for specific needs, such as neck support during travel.
Fortunately the foam from old, torn up cushions can be easily found online. There is the Online Fabric Store, which sells upholstery foam at a deep discount. One could also check out the websites from DIY Upholstery Supply, Foam By Mail, The Foam Shop, and of course Amazon.