This pad may look like Optimat but it is much stiffer, but not thicker, for plush carpet, but can be used on hard surfaces. Standard sizes which can be cut down are 2x4, 2x8, 2x12, 3x5, 3x10, 4x6, 5x8, 6x9, 8x10, 8x11, 9x12, Custom is available in rectangles or rounds and shapes. Delivery is about a week, we normally do not stock this in store.