Last note. In addition, the older versions arent flat. These flip flops are beyond comfortable and do not start hurting your feet unlike the old navy flip flops I would purchase. I was contacted by the company and explained the issue and received a replacement very soon after. They are cheap and have a multitude of outlets. I have tried several, some inexpensive and some high-end shoes and these beat them all. The instructions were clear enough but it did not tell you where to add the little pieces that hold the hanging bars so I am adding a picture to this review of the instructions and I marked in red where to attach those pieces. This feature however does have its limits, while it can handle most common shop noises. I read the size reviews until I was so confused that I didnt know what size to order. I am very happy with battery life, as well as audio/mic quality (I am not an audiophile, nor using these for that purpose).