adjustable anti-slip stretching board ab roller stretch calf balance plate yoga stepper leg stretcher slant ankle foot incline tight calve p

specifications: abs environmentally friendly material, tasteless, durable and corrosion resistant, easy to clean and not deformed. 4-position adjustment helps to make your muscles more sensitive during exercise, helping you to stretch properly and reduce the chance of injury. the calf stretcher also contributes to the recovery of x-shaped legs, o-legs, plantar fasciitis, achilles tendon injuries, calf strains and other ankle pains. non-slip design: textured surface to prevent slipping. the calf stretcher are suitable for home, office, travel and indoor outdoor sports. portable, easy to carry and use.