The first step for us is to make your custom shape would be for you to us a line drawing or a vector shape that is to the exact size you want the sponge to be. We prefer this so it is exactly what you want. However, you can send the shape and your measurements. This will allow us to digitize the shape. For pricing, you would need to include the thickness you want it to expand to, the color, and the quantity requirements. Your email can be sent to email@example.com and we will confirm receipt and it there is anything further we need.