It rinses off very easily with whatever temperature water you prefer. They have also very nearly slipped off my head on a number of occasions. I have multiple pairs. I was glad I also got medium rivets because those worked better on the thicker material of the middle panels. Theres no real locking mechanism, it just snaps out. Slight problem with design. Terrible product, the plastic anchor is not working for dry wall at all. Very ?? disappointed! (Makers like Sennheiser ,AKG, and yes Beyerdynamic) Headphones competing of àt this level this could set you back twice as much as the T90. I was a little stupid and ordered a size too small but in the end it didnt matter, the lacing is quite long so I was easily able to get it on and off despite technically ordering the wrong size.