Incense -Pierre Parfume Highlights Generic Brand Pierre Parfume Description: Small and exquisite, easy to carry; Perfect for: toilets, cars, office and bedroom, etc. It is a good choice to use it when doing yoga; Usage: soaking in clear water about 2-3 hours for the first time, drying, then you can add your favorable essential oil. Soak it when changing other types of essential oil. Specification: Material: Gypsum Size: Dia Approx. 7mm / 0.28inch Package Includes: 2 Pieces Scent Stones Note: Due to manual measurement, please allow 0.5-1cm differences in size. Due to the light and screen difference, the item's color may be slightly different from the pictures. Try to understand.