Very poorly constructed & I?m not sure how they made it out of the warehouse in such a condition. I use them for months on end before replacing them I would recommend the smart foam ear buds, which come included but ones that came with the headphones were too big for my ears but I went ahead and got a pack of them separately. One problem, I circled the areas on the shoe where they are a little rough and rub against my feet and feel like it is pokey. I already told them I tried uninstalling and re-installing the software as well as testing the mouse on different computers. They wash dry dont shrink. I have some genuine gripes about these, regarding the fit and the light (the light issue may seem so insignificant, but you really cant understand until you see them; its so bright. I own a set of Sennheiser Momentum 1. Not certain how many hours of play time until that brightness dims off, but Ive logged between 10 to 12 hours and it is still hot. My wife is on a seemingly endless search for the perfect flip flop - her closet is chock-full of her pairs that didnt make the grade.