This was extremely easy to set up with my phone, and the instructions are straightforward. The arch actually feels natural to me even though I typically wear flat shoes or shoes with a less dramatic arch. Asics Nimbus, ON Cloudsurfer, Brooks Ghost, Saucony Rise Iso2, Under Armour HOVR Velocity und den Under Armour HOVR Machina. He cant fit in either of the other two) I have had these 9 months and already one of the straps have broke! Exchanged for a 10 and it was perfect. TEVA should use better material for the laces. fabric soles, not rubber, slippery beyond belief. I have to admit I was not particularly confident that any product, let alone a less expensive one, would be able to keep my massive iPhone 7 Plus (in an Otter Box case) attached to my handlebars, let alone hold it still enough to read/use while biking, but this product has exceeded expectation. Then I found this product!