Hi, the item is made with homopolymer plastic and dishwAsh safe! These popular, patented mats are made in the USA and are a necessity in every household due to their convenience and functionality. Slicing, dicing, and funneling with these flexible mats makes food preparation a breeze. With 20 years of proven quality, Flex Mats are now available to customize, promoting your business and brand awareness. Durability - mats are patented using virgin FDA approved food grade polymer plastic and soy based printing inks that provide years of satisfactory service. Our one-piece construction provides a hard surface that protects the counter and won't dull knives. DISHWASHER SAFE Flexibility - Several stock sizes are available, but we can also produce any shape or size you desire to ensure maximum advertising impact. All mats are packed one per poly bag with a product information/care/FAQ insert. Cutting Boards