The black leather is a classy look. Its made from a stainless steel metal which is a high quality, durable metal. And the volume is greatly increased by the headphones a well. Wont buy any Crocs with these types of insoles again. If you want these for more than a week or so you should go with the real brand Best ear plugs I have had. Was very easy to work with product support team. Problems arose as i tried putting bikes on the stand. Because they are so flimsy, I never take mine out of the house. Per AMD specs, these are designed to run only one channel (one kit) of 1866MHz RAM.