When I reuphoster, I'm able to get foam custom cut from a wonderful firm in Buffalo, NY. The postage would be prohibitive to go out West, but you might look for a firm that custom cuts. I watched the men as they cut from a slab of dense foam - it was over 8 feet tall, about 10 feet long and 4 feet wide. My cushions were the perfect size and very thick (8 inches) and have lasted well for the past 10 years. The ones at Joanns are at most 6 inches and require you to cut the 4 feet long pieces to fit your cushion size. I hope that this is helpful.