what's this cutting board made of? no chemicals, nontoxic to make it?

Dear Customer, Our wood fiber cutting board composed of natural wood fiber, BPA Free, FDA, Pro 65, LFGB pass-test by SGS Societe Generale de Surveillance. You could feel free to use those eco-wooden cutting board for the kitchen. Any questions about the wooden fiber cutting board, please do not hesitate to contact us. Regards, Cutting Board Expert-TOTIER

What is the difference between the shield and the armor?

Dear Abe, Glad to help you! The shield and the armor cutting board are the same material, made of wood fiber but they have different shapes - round corners and triangle corners. Any questions, feel free to contact us, we will try our best todo the best service for you. Regards, Friend Toptier

It shows "knife friendly", what are the pros compares to the gorilla grip plastic cutting board?

It's made of the natural wood fiber. Pros: BPA Free Dishwasher Safe Reversible Juice Groove Eco-Friendly Non-Porous Mould Proof If you choose the natural wood fiber cutting board, which means choose a healthy life for the kitchen. Any questions, feel free to contact us. Regards, Cutting Board Expert - TOPTIER

This dishwasher safe cutting board made of the wood fiber by trees harvested from North America and other countries. Designed in the USA, made in China. We will update the purchasing list regularly, all raw materials of this kitchen cutting board are sourced from all over the world with better quality and reasonable price. Reversible, Juice Groove, Eco-Friendly, Non-Porous, Non-Slip. BPA Free, FDA, Pro 65, LFGB pass-test by SGS Societe Generale de Surveillance, a better kitchen companion, feel free to use. If you meet any issues, feel free to contact us, we will try our best to do the best service for you. Regards, Toptier Product Team