Material: glass. Size: 4.1 X 4.1 X 3.7 inches. Perfect for DIY replacement reed diffuser sets with essential Oils, reed sticks.Great gift for your friends or family on Birthdays, Weddings, Housewarmings, Mother's Day, or other festivals. Suitable for everyday use, homes, bathroom, office, party, wedding, aromatherapy,Spa, Reiki, Meditation, etc. WAIT FLY Creative Glass Diffuser Bottles for Essential Oils, Replacement Diffusers, Reed Sticks, Crafts, Spa, Home Decoration-Brown-7 OZ