鋸歯シリコンコックリング

Finally got a ring that stays put without pinching, and the sawtooth texture actually adds a nice buzz of sensation. It keeps things noticeably firmer during use, which was exactly what I needed.

The stretchy silicone material is comfortable to wear for longer sessions, and the sawtooth ridges add a surprising amount of extra stimulation for both of us. Definitely keeps things firmer throughout.

The sawtooth texture is definitely noticeable during use, which adds a nice extra sensation. It fits snugly but still stretches enough to be comfortable, though I wish the sizing chart was a bit more detailed. Overall, it does the job for maintaining a firmer erection.