The 1.5mm Varus/Valgus Wedge insert personalizes shoes for your individual needs by stabilizing the natural movement of your forefoot by improving foot, knee, and hip alignment. This adjustment increases power output and adds an average of 10 seconds to your time to exhaustion during maximum efforts. Features: Compatible with all Body Geometry shoesOptions: Varus (Orange) & Valgus (yellow)Reversible shims work for right or left application.Trim to FitVented for added comfort