I got a 3 by 3 foot piece of shapeable foam designed for making contoured foam products such as seats and kneeling pads. It is 4 inches thick and has a 1 by 2 piece cut out of it. I was planning on throwing it out but I will offer it free to anyone who wishes to pick it up. I am Oromocto. 208 0217. It is cuttable with knife, hot knife and shapeable with rasp, sandpaper and files. Water resistent as well.