BRING BACK METCON FREE 3!!!!! I purchased these to replace my Metcon 3's and absolutely hate the 4's. They are way to tight around the foot (I have a very averaged size foot in width). The opening to the shoe is the worst part about it. They moved the tab for the heel towards the middle of the back so it's not useful. The opening is much smaller and a fitted distance around (there is no "tongue") so you have to slide your foot in, causing the back to fold, and then dig your finger underneath your foot to get the back over your heel again. Awful design. Makes no sense at all. They also have less arch support, These are meant for training so I still need good arch support for my knees between the different movements these are meant for. Even though my 3's are pretty beat up I'll probably continue to wear those until I find an entirely different shoe.