This rainbow essential oil diffuser allows you to bring rainbow happiness and function together. Diffuse your favorite essential oils and clip the rainbow to your keys, purse, diaper bag or backpack! The Alden color combo includes colors: red, yellow and mineral yellow. It's made with 100% cotton rope, 100% cotton yarn, and natural wooden beads. Measurements: Approx: 5" x 3". How to use: Drop several essential oils onto the wooden beads. Reapply as little or as often as you like. You do not need to use this rainbow as a diffuser to enjoy it! Simply clip and enjoy. The diffusing is simply a bonus!