Its comfortable (once you acclimate yourself to clip ons). They don't ever get hot. EVER. I could sleep with these. It stays is place no matter what you do. You can try to force them off by triple sommersaults, and when you land, you'll find them happily resting in the same exact spot.
Did I mention how cheap it is? Paired up with the Koss lifetime warranty... why are you even doubting a purchase of these things?
Edited by Mad Lust Envy - 3/19/11 at 6:28am