This reed diffuser for aromatherapy is made from Oregon Bigleaf Maple. It's painted bright blue with durable milk paint. The set includes a glass vial insert for holding essential oil and a cork to seal the vial when the diffuser is not in use. The glass vial can be removed for easy refilling.  Approx. dimensions are 4 in.  tall and 3 in. wide. Essential oil, diffuser base liquid. and bamboo reeds are sold separately.