Pavlok 3 received an IP 67 rating, designating it as “protected against the events of temporary submersion (10 minutes) in lukewarm water up to 1 metre / 3 feet".
What this means is that, while Pavlok 3 will survive a shower, don't take it for a swim.
Don’t worry, Pavlok 3 is fully safe to use even if wet. You can use mild soap and water (or isopropyl alcohol) to clean it.