Exertool Economy Rocker Board,Advanced,Each,BT1RBAPrice: USD36.99 Exertool Economy Rocker Board are made of half-inch plyowood covered with an aluminum oxide non-skid surface. It is designed to stretch your calves, strengthen your ankels, knees and hips, and develop a strong sense of balance. The beginner rocker board offers up to 12.5 degrees of angular displacement, The Intermediate rocker board offers up to 17.5 degrees of angular displacement and The Advanced rocker board offers up to 22.5 degrees of angular displacement. Each board measures 15 in diameter.Other products from H e a l t h P r o d u c t s F o r Y o u |