Matt White Boston Round Glass Bottles - These bottles are ideal for cosmetic, e-liquid, essential oil and personal care applications as well as oils and aromas. 1 oz white-colored clear glass boston round bottle with 20-400 neck finish. The boston round bottle is distinctive in its classic shape. Characteristic of the boston round are its rounded shoulders and rounded base. Glass has high clarity, can be colored, has high chemical-resistance levels, and has extremely high resistance to heat and cold. It is great for storing essential oils.