I am writing this review after only 1 month. Soft quiet rubber. Comfort at a high level. Pretty grippy. The sidewall is relatively soft, so bumps are less noticeable. Let's see how this softness will come out over time. I hope the protector doesn't break. Different pros: Very quiet, that is, the comfort of travel has increased markedly. Even the pits are quieter. Tenacious. With its cons: So far not noticed. I'll write another review in a year.