Features:The Epicurean Kitchen Series slate colored cutting board is 1/4" thick and made from Richlite, an environmentally friendly natural wood fiber composite laminate.For more than 40 years Richlite has been a surface preferred by chefs in restaurants and commercial kitchens.* Knife Friendly* Maintenance Free* Dishwasher Safe* Extremely Durable* Presentation Surface * Environmentally Friendly* Temperature Resistant up to 350 * Develops a richer color over time* National Sanitary Foundation Approved Nonporous surface prohibits bacteria