These have completely changed my running routine. As a cyclist and trail runner, situational awareness is everything and the open-ear bone conduction design means I can hear my music and the road around me at the same time. At just 28g I genuinely forget they’re on my head, and the flexible memory titanium frame stays put even through steep descents and interval sprints. The IP56 rating handled a full downpour on my last long run without a single issue. Best sports headphones I’ve ever owned.