This double walled insulated premium 18/8 stainless steel novelty water bottle will be the talk of the intensive care unit and emergency room when your Respiratory Therapist, Nurse or Doctor shows up drinking cold water out of a mini oxygen bottle! holds 750 ml of hot or cold liquid. Keeps your drink ice cold or steaming hot for 24 hours. Sweat free, BPA free, non-toxic, will never rust. Oxygen 'warning' logo is not painted on, but is made for us by a company that produces vinyl van and truck wraps, so they are water proof, UV proof, heavy vinyl, but they are not dishwasher proof. HAND WASH WITH SOAPY WATER ONLY.