Clear PET boston round bottles come in several different sizes with black dispensing pumps. The 1, 2, and 4 ounce clear bottles include black treatment pumps, which feature a locking mechanism at the neck and dispense .25 cc of product per stroke. The 8, 12, and 16 ounce clear bottles are offered with black lotion pumps, which dispense 0.5 ml of product per stroke and are shipped in the locked position.