The Invasion Silicone Hollow Anal Plug

These smooth silicone plugs hold open a channel into your ass.

These thru-hole butt plug are made of velvety smooth silicone. They're firm, but give a little for comfort. Of course, the larger plug, at over two inches wide is going to be a challenge no matter how silky smooth and flexible the material is. The small is a much more manageable 1.5 inches wide. Once they're in you can run whatever you want through them. You can even cork them closed if you feel like it.

Both plugs are well suited to long term wear. The neck is plenty long enough to clamp down around. The base is cut to more easily fit between the cheeks. Silicone is hypoallergenic and can handle water and oil based lubes. It even cleans up easily, able to take boiling water and strong detergents.