easy to open, carry, drink, close and secure, cap protects the mouthpiece from dirt and dust, safe to carry in your pocket or backpack, no leakage, neither upside down nor in a horizontal position, even with carbonated drinks, pleasant feel of the bottle surface, free of BPA, perfect alternative to disposable bottles, use and reuse for many years, made of high quality 188 stainless steel, recyclable (stainless steel), with wide mouth opening, easy to fill (liquid, ice, powder etc.), easy to clean (with sponge, cleaning brush, etc.)