In a bid to make earbuds smaller and smaller, manufacturers have created a very annoying side effect that is earbuds falling out of a lot of people's ears. Myself very much included. I just got a pair of Airpods and very quickly became frustrated with this age old issue of the entire earbud needing to be supported simply by the friction between shallow, smooth silicon tips and ear tissue that is continuously fighting this by secreting earwax. It's aggravating to the point that I almost exclusively used IEMs with over ear wires or headphones. I finally got around to ordering Comply's foam tips for my Airpods as I've heard they're the best game in town and now finally my Airpods are as convenient as they should be to begin with.
Super comfortable, great seal, better bass (due to the improved seal), and better noise cancelling. I literally will not use earbuds without these from now on.