진공

The seal holds tight right from the first pull, and the pressure builds exactly as promised — I felt the difference within a week of regular use. It’s straightforward to clean and the grip is comfortable even during longer sessions, which I didn’t expect from something so compact.

The wide base actually makes it much easier to grip and control than I expected, and the vacuum holds steady without any awkward slipping. I've only used it a few times, but the sensation is definitely more intense, and the simple build feels solid enough for regular use.

The pressure builds smoothly with each stroke, and the sleeve fits snugly right out of the box. I've used it a handful of times now and the sensation is noticeably more intense than I expected from a basic cylinder setup.