The H700 incorporates a fine tuned upper with mesh paneling for increased breathability and a new heel locking lace system to maximize support and stability. Combined with the revolutionary 4:SYS technology, the H700 is the pinnacle of indoor performance. The 4:SYS technology is the culmination of three years of research into the dynamics of movement. It delivers more support, stability and control by increasing the time from heel contact to shot. This in turn reduces the transfer of energy during your footstrike.