<b>Glintoper Professional Wooden Slant Board, Adjustable Incline Board Calf Ankle Stretcher</b><br> Slant board calf stretcher balance board protects the Achilles tendon, relieves pressure on the leg muscles after exercise, helps blood circulation, and prevents inflammation from causing pain. <br>The increased flexibility and range of motion along the entire inter-connective chain helps relieve and strengthen tight calf muscles, Achilles tendons, Plantar Fascia, and foot muscles. <br>This highly durable and stable incline board has a quick-adjust locking system that can adjust clear angle marks of 5 positions - 15°, 20°, 25°, 30° and 35°. Made of premium, high-quality natural wood with ecological friendly lacquers. <br>Very thick boards increase the load capacity to 450lbs.