1/2" thick, Premium Super High Density Polyethelene Plastic (HDPE) NSF Certified, FDA Approved, USDA Approved, HACCP mpliant; Safe for mmercial dishwashers up to 185 degrees; Warp, stain and crack resistant; Good for restaurants, mmercial kitchens and replacement of cutting unters; Fast turnaround of 1-2 business days; Made in the USA