Natural wood fiber based cutting surface trees are harvested from managed forests. Made in the USA Surfaces are dishwasher safe or are easily cleaned with soap and water. National Safety Foundation (NSF) approved. Knife Friendly. Maintenance free, no need to oil or bleach. Material developes a richer color over time. Preferred material for food preparation by chefs and commercial kitchens for over 40 years. Temperature resistant to up to 350 degrees. Use as a trivet without leaving browned rings from pots and pans. Enginered space for handling and hanging. Thin profile allows for efficient storage and handling.