Product Dimensions: This professional slant board measures 12.6 x 15 inches and is adjustable to four positions: 15°, 20°, 25°, and 30°. (Product does not include tensioner) Solid Construction: Made of high-quality plywood with a triangular structure, this calf stretching slant board is durable and supports up to 450 lbs, ensuring stability during exercise. Safety Features: Features a non-slip EVA base to enhance safety and confidence during use. Suitable for beginners, experienced athletes, and individuals of all body types. Versatile Use: The ankle stretch board includes an upgraded pull ring and helps relieve symptoms related to plantar fasciitis, Achilles tendonitis, patellar tendonitis, shin splints, calf strains, ankle sprains, hip pain, tight calves, and hamstrings. Portable Design: Lightweight and compact design allows for easy storage and transport. Does not take up much space. Ideal as a gift for friends and family.