The high-quality food grade Thar Diamond Stainless Steel Single Layer Bottles are now sleeker and more stylish than before. The lid is made of BPA-Free material that can be opened with a simple rotation and is leakproof. Nanobot Thar Diamond can keep your water odour less and non-contaminated. Nanobot Thar Diamond bottle is BPA- Free, made with food-grade stainless steel.