Its made of very cheap and thin metal that fits loosely. Pero en su conjunto es muy util para la limpieza e la bici Just received two of these units. I had the straps but they were unnecessary. I plan to get more colors. Should you bother getting these headphones that are at such a low price point, you might be getting ripped off for some bootlegged headset forged from a trashcan with old chicken bones? Dont worry I once like that. During the second time that I used the product, I noticed my boat drifting away from the dock and the line laying limp, dangling into the water. Got these to replace a pair of crocs boat shoes with the openings on the side. The buds are strong, nothing flimsy about them. TADA, you have your phone mounted secure on your bike.