Features two plugs that slightly taper to the tip which makes it one of the most innovative butt plugs available. In addition to being a standard butt plug, you can use the tunnel hole that goes all the way through the plug for various play including lube insertion, fingers and watersports. The clear version also makes it possible to see right into the other person.It is made of special blend of silicone and TPR called PF Blend. It is safe with water-based lubes. This product is not compatible with latex. Medium size has an insertable length of 3.5 in. and 6.9 in. circumference.