Horrible design.  They look great, but fall apart within a week of use.  Adidas is aware of this problem and will offer you $140 voucher to be used at adidas.com.  Unfortunately this usually is a fraction of the cost of these shoes.  I was extremely disappointed as I purchased 3 pairs for myself and 2 for my boyfriend.  The sole separates from the bottom of the shoe as described/photographed by numerous reviewers on Amazon.  I would advise you to spend your money on another brand.