Calf Stretcher, Non-Slip Slant Board, Adjustable Incline Board for Calf Stretching, Foldable and PortableIncline Board: Prevent pain and strain; our stretching equipment makes stretching easier and more effective than doing it manually. A great assistant for recovery, it helps keep your calves and hamstrings flexible. Four Stretching Positions: Our stretch board lets you choose a calf incline angle ranging from mild to intense (15, 20, 25, 30, and 35). Non Slip Stretcher: Don't worry about falling off at a higher slant; our stretcher is built so you can