Introducing the Silicone Glans Plug in Black. This item is made of soft silicone so is a great piece for experimentation, whether you are a beginner or experienced cock and ball player. The soft and flexible material makes this item slightly easier to insert but also works great with lube! This plug prevents any liquids coming out of the penis and is a great way to test self-control. The perfect item and material to experiment with, especially for those interested in urethral play.