The two sandals were different sizes eventhough they were both marked 11. I raise my review by one star on account of their efforts. The easiest way to tell if Beats are real are not (at least the Solo 3) is that authentic ones have the W1 chip that will automatically connect to your Apple device, and fake ones dont have that Apple W1 chip. Comfortable stylish and affordable. Dont understand why. I do have a worry now: I need a kind of fitting to have this tool attached to the truck at all times. I added some jst plugs to the battery so I can run a 800mah lipo battery, run times are now incredible, and I can use a standard rc battery charger, and skip the long wait using the USB charger thats included. Here is a quick rundown on installation:Basically, I marked where I wanted the table on painters tape. Its a perfect fit and the sound quality is excellent. Fingers crossed that they will fit.