PHYSICAL THERAPIST RECOMMENDATION: Slant board for calf stretch are used in rehab to help the body recover from plantar fasciitis, calf strains, Achilles tendon injuries, shin splints, foot and ankle injuries and pain FEATURES OF THE DEEP SQUAT WEDGE: In order to provide you with a more open stance and optimal stretching, we have designed four separate deep squat wedges two large17 (4 "H X 6.3 "W X 12 "L) and two small two 8.5 (2 "H X 6.3 "W X 11.9 "L), which can enhance deep squat comfort or perform a variety of stretches ranging from gentle to deep before and after a workout SUITABLE FOR ALL AGES AND FITNESS LEVELS: The Squat wedge improves poor mobility in the ankles, knees and hips; by raising your heels during squats to keep you in the correct position for the exercise, you can relieve pressure on your lower back, knees, hips and ankles, helping to eliminate heel spurs, plantar fasciitis and shin splints. Build core strength and reduce the risk of injury PREMIUM QUALITY MATERIALS: Calf stretcher squat wedge are made of EPP eco-friendly material that is waterproof, oil resistant, odorless, easy to clean and 100% recyclable. squat wedge can hold up to 480 pounds for deep squats lightweight sturdy non-deformable Deep squat wedges for runners and fitness enthusiasts work your legs and feet WIDE APPLICATION: The slant boards are suitable for home, office, gym and outdoor park to stretch and strengthen your feet, ankles, calves, knee etc. It can be used as calf stretcher, calf raise block, squat wedge, heel foot ankle knee stretching platform, leg extender, yoga stretch and push up board