Stretch Pump Plug

An inflatable plug moulded from thick, smooth red latex with an attached hand pump. There's no solid core, which means it compresses to fit through even tight openings, then inflates once it's in place. You can pump it up to double its starting volume for a progressive stretch that you control.

The hand pump has a quick-release valve, so you can deflate fast when you need to or let the air out gradually for a slower sensation. Insert deflated and pump up, or inflate first and see if you can take it.