My husband and I both bought our custom fit headphones from Mark in Washington DC at an International Bike show. It’s one of the best decisions you can make as a biker to invest in…..at least we think so. The noise blocking, and sound quality that comes from these custom made pieces are exceptionally amazing. The workmanship is precise and perfect really. Marks persistence and diligence in customer satisfaction is quite remarkable. There’s lots of products to choose from…..I strongly recommend to anyone….look no further… you found the right place. Thanks Mark!!