The firmness and compactness of Luna rolls make them so economical. There is no need to frequently replace them during treatment, so time consuming and expensive disturbances are a thing of the past. Luna goes on absorbing throughout the dental procedure and continues to retract the cheek which are important aspects when choosing a dental roll. Packed in plastic bags protecting contents from moisture and dust. Keeps its shape and does not fall apart when full of saliva. Size 1.