4 Silicone Urethral Sounds and ring. These are very smooth and with proper lubrication work very well. They slide right in all the way to the bladder so open up the spot where the prostate is so you pee harder. The ring holds it in place better so you can wear it for a while without it slipping out. Other uses too for play inclined couples. Might sting a little afterward if things get rough. Goes away in a day or two. Play Dr. or nurse. Use sterile gloves when possible alomg with KY jelly.