I have seen other designs on racks that dont require an allen key to tighten. Aún así, sí las recomendaría. While it may be slightly narrower, I felt the fit was wonderful and have already ordered my second pair. Bought this before traveling to Europe for 2 weeks - I knew I would be doing a lot of walking and wanted something that could hold my essentials plus a water bottle, etc. went to the doctor while ago because my ear was bleeding and it hurt. I have gotten so many compliments on my skin. The main issue I have is with the top part of the case. My son said they felt good on. December 2020 Update:Headphones still work great. The shoe is exactly what you find in stores.