The hypoallergenic glass is nonporous and body safe, and when cared for properly, is designed to last a lifetime. Since glass is nonporous, cleanup is a snap. For bodily safety, never analy insert this toy beyond the last ball as it is intended to serve as a stopper base. Specifications: Item Length 8.5 inches (216 mm) Item Width 1.5 inches (38 mm) Item Height 1 inches (25 mm) Item Girth 2.5 inches (64 mm)