Silver Vacuum Insulated Double-Walled Water Bottle with Twist-Free and No-Screw Insulated Flask, Portable Flask for Cold or Hot Beverages, 12oz - Revomax V2

A Vietnam war veteran who lost an arm in the war's explosion, he said REVO MAX was the first glass that truly allowed him to drink on his own.“REVOMAX twist free flask is such a genius invention and that the one-handed operation feature was a saviour of my life.Although there are other flasks that can be opened with one hand also, those bottles can only open from either a small nozzle or straw which are very difficult to clean.With one hand, not only can I open easily to drink from my RevoMax, but most importantly, I can open and refill which no other flasks on the market can do. REVOMAX allows me to enjoy the happiness of an independent life."