All our mat board comes in one of five colors and are acid free by BD-Matboard. The mat board will be attached to foamcore and bevel cut on the inside. It will then be sealed in a cello bag to protect it during shipping.
We have currently five colors in stock. When you place an order, you may add a note specifying what pieces you want in what color. Otherwise, we choose based on what matches the piece the best. Just refer to the names by the labels on the below photo.