This is a great case, especially for the money. It's solid and well built, and big enough to fit my IEMs, cable, and 4 adapters. Despite fitting all of those items, it comfortably fits in my pocket. It seems to have a rubber seal of some kind, so it's probably weather proof too (although I didn't test that). I highly recommend it.
EDIT: 2 months into active, EDC use, this case has stood the test of time. I can confirm that it's water resistant, since I went rafting once and forgot that it was in my pocket. I was completely wet, but the items inside were dry. The case buckled slightly in several places due to active usage, but this is very minor damage that did not impede functionality, and I really can't complain for the price.