1.5 Adjustable Angles for All Fitness Levels: Precisely adjustable angles (15°, 20°, 25°, 30°, 35°) accommodate beginners and advanced users for calf stretches, posture improvement, injury rehabilitation, and relief of calf, ankle, and hamstring pain. 2.Wide, Stable & Non-Slip Surface: Extra-large 15.5' x 13.3' hardwood surface with secure rubber feet provides maximum stability, ensuring and balance even at steep angles; supports up to 350 lbs, suitable for various heights and body types. 3., & Easy Maintenance: Only 5.3 lbs, the foldable design is perfect for convenient transport and storage—use at home, gym, or outdoors. Simply wipe the hardwood surface clean after each use for hassle- maintenance. 4.Enhanced Safety for Seniors & Recovery: Designed with grooves and sturdy supporting blocks, this board exceptional stability, preventing accidental slips or collapse, making it ideal for seniors and those in post-surgery rehabilitation.