Our heavy duty glass amber bottle is a classic Boston Round shape that easily fits into your hand and provides a sturdy grip. Perfect for aromatherapy. The 1790 glass amber spray bottles are the perfect companion for aromatherapy. The dark brown amber glass protects your essential oils from harmful UV light to ensure that they stay potent and do not lose their aroma. This is great because you don't have to worry about using your essential oil mixture so fast.