This vintage hot water bottle was made by KantleeK in 1913 and was sold exclusively at REXALL Drug stores. Its beautiful blue color and United States craftsmanship make it a unique addition to any collection. The bottle comes with its original Schrader plug, adding to its authenticity and value. Perfect for a baby boy, it could also been used for other purposes such as soothing sore muscles or as a decorative item. Don't miss out on this rare find! The rubber bottle is very soft and pliable, but for its age I would not use it for its intended use. It measures 10 x 4 3/4 inches. Thanks for looking.