NWT Lifefactory 12oz Glass Water Bottle with Silicone Sleeve and Straw Top. The Lifefactory 12 oz bottle is your short-trip specialist. Head out for a quick run to the store, to school, or the gym, and hydrate in style. You get beautiful colors, smooth, clean glass, and the classic, tight fitting, easy-carry cap. The 12 oz bottle is also perfect for teens – easy to grip, great taste and less waste left behind than single-use containers. Interchangeable with all Lifefactory Glass Bottle Tops