With this 2 oz. green Boston round glass bottle with black poly cone cap, you can present any oil or liquid in a stylish way while ensuring freshness and keeping leaks at bay. This sleek glass bottle comes with a black cap lined with polypropylene in a cone shape. When the cap is in place, the cone covers the mouth of the bottle, creating a tight seal to limit air penetration. This green glass bottle makes great packaging for your handmade gifts.