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. Glass butt plug features a flat base for bodily safety and easy use. Specifications: Length 3.75 inches (95 mm) Width 1.5 inches (38 mm) Height 1.5 inches (38 mm) Item Girth 5.88 inches (149 mm)