The Stanley brand, loved by generations, has a history of over 100 years. William Stanley Jr., the inventor who created the brand, is a person who revolutionized the way we enjoy hot drinks. In 1913, we devised the fully stainless steel vacuum bottle that is loved today as a portable bottle that combines vacuum insulation and the strength of stainless steel. Over the century since then, the Stanley Vacuum Bottle has evolved from concept to icon, becoming an essential part of the workplace, road trips and outdoor activities. Stanley water bottles use vacuum insulation technology to prevent heat transfer between the inner and outer bottles, keeping your coffee hot. Tight stopper prevents air from entering and exiting the bottle, preventing convection. Double-walled vacuum insulation keeps your coffee hot for 24 hours. Stanley's water bottles are highly durable and won't affect the flavor of your coffee compared to regular plastic bottles.