Product Description Material: ABS + volcanic stone Size: 29*50mm Color: black, white, pink Quantity: 1 piece Package content: 1 * oil absorbing ball />1.[Rugged]: The volcanic roller oil control stone features ABS and volcanic stone, whischnh means it can be stable and strong. 2.[Portable]: The volcanic oil-absorbing roller is only 29* in size 50mm, so you can carry it. 3.[Nice gift]: Reusable portable oily control roller is a great gift for your friend, sister and people who want to clean their skin. 4.[Easy to clean]: Use soapy water or facial cleanser to clean the stone in the oily skin care roller stone. 5.[Detachable]: rotate counterclockwise to remove the volcanic stone in the facial oil face roller, easy to remove , easy to use