The high-quality food grade Nero Stainless Steel is now sleeker and stylish than before. The lid is made from food grade stainless steel that can be opened with a simple rotatory and leak proof lid. Nanobot Nero can keep your water odor less and non-contaminated. Nanobot Nero is BPA- Free, made with the food grade stainless steel. Powder coat finish is durable and safe for people and the planet.