IWANNA Foot Stretcher Multi Slant Board Adjustable Ankle Incline , back Stretcher Massager Mate / Foot leg Stretch ADJUSTABLE: The slant board adjusts to 3 levels of heights: 18", 22.5", 36.5". DURABLE: High-quality non-toxic adjustable calf stretcher board. COMFORTABLE: Non-slip front and back surface creates a stable surface for foot and back. Dual-Purpose: Can be used at home, at work. Just flip the board and enjoy your stretch and massage for foot and back. Easy Assembly: Ready to use right out of the box.