Nothing like Olukai. My one and only gripe is that they have only supplied one pair of Comply Foam Sport Tips in Medium. So i decided on an upgrade to 600 2 gen. THERE i SAID IT! I was glad these were extra roomy for my 9 yr. Some pros and cons. I have 2 transmitters upstairs and one transmitter downstairs. I was under the impression that i was getting 4 remotes in addition to the charger They feel very comfortable almost like wearing a sock. I write this caution as I nurse a fractured wrist and elbow along with bruised ribs.