All SafetyChew materials are sourced, manufactured, and assembled in the USA and 100% non-toxic!The food-grade green ring is made of a durable polymer with an extremely high tear strength to ensure the SafetyChew can withstand many intense chewing sessions. This polymer is sourced from Pennsylvania and our manufacturer is located in Maine.The nylon pin that locks the bully stick along with the rubber latch are both sourced from the USA and assembly occurs in Austin, Texas.Click play below to see how strong SafetyChew's nylon pin really is: