WOVTE Aromatherapy Glass Roll On Bottles, 10ml (1/3oz) Cobalt Frosted Blue Glass - 12 Pack Add any of your favorite essential oils in an easy grab and go convenience in a ready to use roll-on Perfect for creating your own Aromatherapy Blends High Quality Frosted bottles for light-sensitive liquids Refillable so you can use over and over again Great size for travel and home use