These are suited for the indoor climate controlled environment. The sound quality of these are better than the Liberty Air. Mi advertencia para otros compradores es que no son un buen regalo. Nothing much to say about this sandals as Keen is already a trusted brand. Hardly could be any easier. You cant attach USB devices to the linux container ( unless its android ) so things like Ethernet or other devices are right out. These stay in and the only reason I know that these are in my ear is that I cannot hear anything from outside. Cheap quality. The worst is the mic picking up every little bit of background noise it possibly can. I bought them to replace some 3-year-old Nike ACG sandals that look almost identical.