“Mister B has designed the ultimate dog tail. The Mister B Pup Hero dog tail is made from a high quality soft silicone, and has a specially designed butt plug which is comfortable and easy to insert. Due to the design of the tail part your tail will wag in the perfect direction. We recommend using a water based lubricant.High quality silicone.Ergonomic designThe bigger the size the longer the tailSize M: 5.1 cm diameter and 37 cm total lengthSize L: 6.1 cm diameter and 42 cm total lengthSize XL: 7.1 cm diameter and 47 cm total length”