It just doesnt do wBeing in the Military most of my life and wearing Government issued combat boots that never fit properly, my feet now are a total wreck. Trying to install and have spent an hour looking online for instructions . Its Xmas, so I do forgive, but am very disappointed in the quality control. The heel strap is not needed at all! Compré estas sandalias un número más grande para un mejor confort y así fue. Saved so much we were able to add a powered sub and new door speakers to finish out his stereo. My right ear drum was damaged years ago. Its like a foot long. Definitely not as nice or as comfortable. Merry Christmas and happy new year to all Amazonians.