Love this idea, you just cover a Starbucks glass bottle or any 7.5oz to 9.2 oz. bottles using 12" balloons. Just cut the top band off the balloon and then gathered the balloon up like a sock then VERY carefully pulled the balloon on over the bottom and worked it upward. Be very careful not to run your finger through the balloon. These were $1 store balloons but thicker ones would be less worry of sticking your finger through it.