XL Humongous Butt Plug Black. This extra large butt plug is made from high quality, anti-bacterial materials. Safe and hygienic PVC plug is truly humongous. Please do not order unless you understand the size. This plug stands 8 inches high and at its widest point is 4.5 inches wide. The top triangle shape part of the plug is approximately 5 inches by 5 inches. Made of phthalate free, non-toxic materials: high quality, anti-bacterial Poly-Melt PVC. A water based lubricant is recommended. Always clean before and after use.