I love these earphones. The sound quality, noise cancellation and different modes/presets are greatHowever, less than two months after buying these, I'm already looking to buy a new pair of earphones.You are given 4 different ear tips with the earphones - 3 pairs silicone and 1 pair foam - and 3 pairs of ear fins, which is perfect for finding the right fit. The downside to this is that you are only given one of each size and type, with no replacements listed anywhere online. So if you lose one, or, like in my case with the foam tips, they start to tear, there's nothing you can do.I attempted to try some Okuli Foam ear tips, and while they did fit (although I had to force them on somewhat and they are a real pain to remove), they would not stay in my ear, even with the ear fins in.A couple of other points I would like to add is that the ear fins and ear tips can be quite annoying to attach. They can also be quite noisy when moving, or just moving the cable, even with noise cancellation on.I haven't seen anyone else mention these points which is why I'm posting my experience using these earphones here. I hope this helps.