First off, these things are comfortable! Nice to not have my ear hitting the speaker bits anymore. Noise cancelation still works great. Best of all, these things don't get nearly as hot feeling as the originals. However, I was the opposite of the other reviewer! I just mashed on the things until I heard some clicking and I was pretty forceful with it. I will agree, it was a little fiddly to get them on, but worth it! Definitely felt durable enough to take a little bit of abuse, but yeah, totally agree with the other reviewer, using caution would be wise, don't be like me! Do buy these though, they feel great.