I have a severe latex allergy, what you're reacting to in the wheelchair armrest is the FOAM inside. Most foam contains latex. So if the foam is compressed, it puts some particles air borne that you're inhaling. I think you can get latex free wheelchairs/armrests, you have to look for it though.
Poor support for spine or body - polyurethane foam does not support the body or spine properly.; Not particularly comfortable - a polyurethane mattress does not feel especially comfortable. The high resiliency grade does a better job, but even then it does not match a latex mattress.
It will not have fire retardants or fire blockers, so you will not be breathing any potentially harmful chemicals over the years you sleep on the mattress. It will be more supportive than a conventional mattress because unlike polyurethane foam that settles where you .
Jun 10, 2017 · These options usually are made with a percentage of soy-derived foam but still have some level of petroleum-based foam. LATEX: Latex pillows -- whether blended (synthetic + natural) or all-natural -- contain fewer chemicals than memory foam pillows and typically are made with latex that is OEKO-Tex certified. If you prefer to avoid synthetics.
Latex foam is outside the scope of our certification. It is possible for a manufacturer to include a layer of latex in a mattress that contains certified polyurethane foam. In this case, as long as the flexible polyurethane foam is certified, the manufacturer would be allowed to use the CertiPUR-US seal.