Index chopping boards were designed by Damian Evans and can solve any food contamination issues you might have. The idea is that each chopping board is used with specific foods. To help you remember, the chopping boards' colors try to be reminiscent of the food: red - meat, white - cooked foods, blue - fish, and green - vegetables. The boards are made from polypropylene and are dishwasher safe. The boards also come with a housing unit, styled similar to a file folder, which is made of ABS plastic with rubber bottom. Board dimensions: 8" x 12" x .75".