They get dirty quickly but she just pops them in the wash and they come out looking fresh again. Not my actual Birkenstocks. I recommend this big time. I don?t ever want to take them off. Overall Im extremely pleased infact I posted this product on my facebook and decided to buy 2 more my wifes family. These are an excellent product so far. One happy customer here. Most of KZ has a rep for heavy bass with a deep v curve. The only downside is, being a true studio headphone, they will show up any faults in the recording or your hi fi chain. Mostly with, as sweaty feet and faux fur dont play nicely together in my experience.