0.5oz Green Boston Rounds Our Boston Round bottles are widely used in the aromatherapy industry for blending and dispensing essential and carrier oils. They're available in a range of sizes, from 1/2 oz up to 16oz capacity. You can choose from the following compatible closures: Phenolic caps, tamper evident dropper caps, child resistant dropper caps, atomiser sprays and lotion pumps. Amber, Cobalt Blue, Clear and Green four colors are available for your needs. Click on a product to view details.