?PROBOTT, is one of the leading brands. Probott Vacuum Bottles feature BPA Free, Hot & Cold, Unbreakable stainless-steel construction, thermos vacuum insulation technology for maximum temperature retention, keep beverages cold for up to long hours, hygienic push button sip through lid with locking mechanism. ?Before Probott ?, hydration bottles were made from either polycarbonate plastic or aluminium. We now know that both those materials are associated with a host of diseases and illnesses, info that wasn't common knowledge in 2011 when we released the first food-grade stainless bottle onto the market. But there were studies, even then, that worried us and caused us to doubt the safety of the existing bottles on the market. The founders of Probott ? wanted to give health conscious people a safe alternative to plastic and aluminium. So, the very first Probott ? was made from high quality, 18/8, food-grade stainless steel - a metal superior in both strength and safety that contains no harmful chemicals or toxins. Now all those other companies that started out making plastic or aluminium bottles are crowing about their new stainless bottles. We got it right the first time because health has always been our top priority.