These cutting mats are thicker than other mats, 1.3mm design makes sure that they will not wear out easily as other brands mats, more durable. – The Anti-Slip Bottom keeps our mats in place and prevents slipping on most counter-tops. Specifically designed not to dull the edge of a knife, also ease transferring their contents to a cooking or storage vessel. – Our flexible cutting mats are 4 colours coded for different food groups, to help preventing cross contamination. The colours are: Green for vegetables, Yellow for poultry, Red for meats, Blue for fish. – Ease transferring contents to a cooking or storage vessel. Cutting mats are dishwasher safe (＜90℃) ( keep them flat in the dishwasher. If there is slightly curl after dishwashing, put it into boiling water and take out immediately, lay it flat on the countertop.) and measured 12 × 15 inches. They are very easy to clean and store. – cutting mats are BPA free & dishwasher safe. Unlike wood, plastic boards do allow rinsing with harsher cleaning chemicals such as bleach and other disinfectants without damage to the board or retention of the chemicals to later contaminate food.