bubi silicone water bottle, 14 oz in purple bübi bottle the bübi bottle (6"x2.75") is the most unique, reusable container, originally designed and created to be a water bottle, but has proven to be so much more. the 22 oz has been such a great success, this 14 oz has become an overnight hit for toddlers, to elementary school lunch boxes and for adults who just want a smaller container, both products scrunch down flat and roll up to conveniently fit into your pocket, backpack or bag.