I used the case while running with my AirPods. I attached it with the included carabineer on my running fanny pack. As i was running I heard something drop and turned to see my case on the ground! The carabineer was still on my pack, but the silicon that held the carabineer on had broke! Apparently the case bouncing with my stride was to much for it. Unfortunately, I missed my return window by 2 days... only because I procrastinated 4 days getting on and processing the return.