This is the finest-cheapest set of 4 Roof Rack Gutter Mounts available. Fit well, instantly comfortable, never had to wear them in. It was easy to assemble. I highly recommend this supplier. For that reason I?m sending them back. But these fit just between and are extremely comfortable. Two days later they were two sizes too small. Also, I felt that with this new unit, the hardware and AI would probably have newer/more refinements. These are incredibly comfortable sandals and great for walking. In addition to this problem, I can also feel the seam between the upper and the insole inside the right slipper.