Good stuff . The elastic bands are nothing more than aesthetic because tightening them really has no effect on tightening the actual shoe but again, no big complaint there. 5 and 29’s. Returned the product Not with these the whole sandal is 1 solid design. Fits true to size: medium width is plenty wide for a "D" width foot. It is fanless and much faster than the early 2020 model. This is a sad review for me today. I have not used the rails yet, but if there is somthing to note, I will edit this post. Almost so tight you dont need a thumb screw clamp