[RichH]

Simply do a websearch for foam suppliers near you. I prefer the heavier weight foams for boat, etc. cushions. The light weight foams dont give good support. ..... then be sure to add (glue) at least a 1" thick layer of poly fiber batting to the top of the cushion foam to make the foam ''works'' more evenly and give better support .... just like how its done with premium grade upholstery. You can additionaly overlay the poly batting with a latex film barrier to protect the foam from ''odors''.