The Chinese version of the cutting board, these chopping blocks are better than their Western counterpart, for not only are they anti-bacterial (as studies have proven), but the soft wood also does not dull knife blades like harder woods and plastics. Made of pine wood from the California gold country (Auburn/Placerville area). Approx.3" thick. Storage Hint: store chopping blocks upright (not on flat sides) so they do not retain moisture.