Ive just rec'd shipping confirmation for my 4th set of Soundsport headsets! The first two stopped working after 2-3 times in the gym. The 3rd set stopped mid workout the first time I used them! Im a 62 yr old woman and do not sweat profusely so excess moisture should not be the probem. Both earbuds shut down at same time. I am confused about why Bose continues to produce and ship an obviously defective product. Pull the plug and redesign this defective produxt. Full Disclosure: These were a gift for being a Hilton Honors member and were not purchased. If I had spent $ on these I would be furious and expect a full refund and never buy another bose product again. Bose used to be a well respected brand, we had terrific speakers years so but my opinion of their quality has changed and I would not purchase a Bose product now.