I love these; the top is elasticized so it stretches some and I am able to wear it. It has enough room for charging cable and adaptor. What more could you ask for??! It was concerning so I made sure it clicked shut and I dropped it on purpose only a foot above the floor, both earbuds flew out again. "This Unit Not Labeled for Retail Sale" is printed on each K-Cup. It?s extremely lightweight so I was a little concerned with durability when we initially took it out of the box, but once clamped onto the bike, it?s super sturdy. My only criticism is that there isnt a mechanism to lock the arm down when not in use, which is only annoying because Im clumsy and bump into it when switching vinyl. They could have supplied better screws, because these are of a soft metal, so I used a better quality. Of course it would still be like new if the damn strap would stay on a bit better. Its really a shoe rack and hard to see it being suitable for anything else.