They allow any input of size but there is a 96" maximum for any piece so they'll cut your requested piece into sections. That 96" maximum is not mentioned ANYWHERE during the ordering process or that larger pieces will come in sections and are meant to be adhered together. When you advertise custom sizes and shapes, that's important information. Apparently this is mentioned in a note at the very bottom of the final checkout page only, where you input credit card information, under the payment terms. I had tried to find that information before I ordered but because it wasn't mentioned when I picked my size, I assumed I'd get the size I requested and not three smaller pieces. When I asked for a refund, they told me larger pieces are meant to be adhered together. That information should be made clear when you select the size so you know what to expect. Totally dishonest that they knowingly make this info available only in an area where you wouldn't notice it or look for it. I likely still would have ordered this foam, but would have done it entirely differently had I known this vital information when I designed the pieces using their system.