NEW P.R.O. 1:1 Power Plate: P.R.O. Grade Uni Directional Carbon for ultra light stiffness Direct Venttechnology for cooling and drainage concave shaping for ultra low 7.0mm stack height, enhanced platestiffness and anatomic support and built in Longitudinal Arch Support for optimal support, power, andefficiency. Now with replaceable heel bumper. 1:1 Anatomic TRI Closure: eliminates hot spots and removes pressure from your forefoot patent pending. Fully lined mesh upper for barefoot comfort. Dual density EVA insole for superior support.