I have used fenix 3 for almost two years with silicon band or the original leather band without any issues. I used it 7x24. Since the end of April I have the Fenix 5. I is smaller and it should be more comfortable but I got a skin rash from it under the silicon band on my left wrist. I don't know if anyone has any kind of issues like this. I am a little bit disappointed. I may order the leather band and use this one only when exercising.