On our return portion I stuffed the bag out with blankets and towels which seemed to work well to prevent flapping. This was probably an intentional design decision to maximize battery life, but it makes this device a poor fit for mixed work/recreational use. Software is so easy to understand that your mom could use it while riding a unicorn on a full moon in winter. If you can’t get a good fit, you will hear noise in your environment. 4/26/19As an Anker fan I expect no less than what I pay for. Nope, and I returned and tried asking for a replacement. My old crocs have M7 W9 on the sole so in some confusion I ordered the M7 W8 originally. I am very pleased that I finally found a great headset for my personal use. We sent them back. ) I generally wear a size 12 M boot, and the EU 46 (equivalent to US size 12) fits my foot very well.