Made from natural plant fiber as bamboo fiber and rice hull. It is food safe, dishwasher safe with FDA and LFGB certificate. It is fully biodegradable, compostable and reusable. The colors could be made in any color pan-tone no.from clients with temperature tolerance: below 110 degree. This is safe for Humans, it’s nonpoisonous and non-fragrant. It can be easily degrade after buried under the soil.