The high-quality food grade Black Panther Stainless SteelSingle Layer Bottles are now sleeker and more stylish than before. The lid is made from food-grade stainless steel that can be opened with a simple rotation and is leak-proof. Nanobot Black Panther can keep your water odour less and non-contaminated. Nanobot Black Pantheris BPA- Free, made with food-grade stainless steel. The powder coat black finish is durable and safe for people and the planet.