Adjusts to four different degree settings. Stretch and strengthen your shins, calves and ankles on Power Systems' extra-strong steel Premium Slant Board. The solid construction with a slip resistant surface to ensure it stays anchored during use. Accommodates shoe sizes 20 and smaller. 14 x 14 inches. Black. Since 1986, Power Systems' passion for fitness has been fueled by our customers. Power Systems is committed to ensuring people have the tools to lead active lives with professional-grade products, cutting-edge educational materials, and elite customer service. “Power Your Potential” is the philosophy that guides everything Power Systems stands for.