However, the sides have absolutely no support and flap wide open while the sewn toe portion is way too tight. I was astounded at how comfortable they are on my feet. Perfect school shoes. This was very well designed and easy to install. Full confession; I chose to use pliers to bend the pins. I will let you know how my next pair works out! There is no diagram of the completed assembly for one. but I definitely was complimented on these, and I love them! Not much sole on the bottom. It is technically tool-less but you would benefit from having a small level to make sure it isnt crooked