The 32-ounce Founder insulated bottle from California-based Purist, features a unique design that combines surgical grade stainless steel with an ultrafine inner layer of glass, creating a thin lining that keeps your beverages pure and your bottle cleaner. It is unbreakable of course, and the bottles are double-wall vacuum insulated to keep beverages hot for 12 and cold for 24. The leakproof lid features a fold-out handle. Available in a range of colors and finishes.