The high-quality food-grade Falcon vacuum insulated flask is now stronger than before. The lid of the falcon double layer insulated bottles is made of food-grade stainless steel that can be opened with a simple rotation. Nanobot Falcon can keep your drink cold for up to 24 hours and hot for up to 18 hours. Nanobot Falcon is made in India vacuum insulated bottles which are BPA- Free & made with food-grade stainless steel. The powder coat finish is durable and safe for people and the planet.