No water is required, just a finish that’s presentable. I bought these to complement the red metal Airpod cover I bought. Your feet will thank you - mine sure do. After so many years of daily wear though, I have never found any shoe so comfortable and oong lasting. I am a nurse and usually wear sanita or dansko clogs for 12 hour shift’s. It is important to note however that even though this speaker uses Bluetooth 5. Die Vorab-Verlierer:1. Ordered this product for a honda pioneer 700 and it is too big to fit the roll cage . I think they sound great and they were easy to install to get working with my laptop. Their own marketing for the wallet doesnt really talk about the leather much but it is soft, well tanned and supple.