I was looking for headphones that I could use for my jogging. After trying many other types of headphones (classical, in-ear, ear tower model with double tip Sennheiser MX85), none gave me satisfaction. I have not tested the large headphones that go over the head because it seems cumbersome. Either headphones fell with repeated shocks or sweat stopping up the headphones and listening was not possible or when the earhook hurt my ears after 45 minutes. The least bad solution was still the classic earpiece that slipped less than others with sweat and I was pushing into the ear every 30 seconds. Finally, the Sennheiser PMX 80 Sport meets my expectations. It is a pleasure to run with these headphones that take up impeccably whatever movements you are doing. As they do not fit in the ear, listening is maintained even when you sweat a lot, which is one case or raining. The color is not very discreet but certainly maintaining and sound quality (I am not a specialist hi fi) make it an accessory of choice for jogging or other more hectic sports (I have tried neither boxing nor skydiving). I even use it at home to listen on the computer but beyond an hour, it serves too (from the verb shake) that becomes painful and is not a problem when jogging as this pressure effect is masked by the effort.