One example: 20 oz. ultimate dual wall bottle. Featuring dual-wall insulation that keeps beverages hot or cold, a pop-up, no-spill, drink-thru lid and an ounce chart and clip that come standard. Also has a molded grip that fits most car cup holders. Measures 3 9/16″ dia x 9 1/2″ h and reaches its 20 oz. capacity when filled to the rim! BPA free. Due to the nature of the material, there may be unavoidable scratches on the polycarbonate bottles.