Product Dimensions: This professional slant board measures 12.6 x 15 inches and can be adjusted to 4 positions: 15, 20, 25, and 30 degrees. (Product does not include tensioner) Solid Construction: Made of plywood with a triangular structure, this calf stretching slant board is durable and supports up to 450 lbs, providing stability during exercise. Safety Feature: Features a non-slip EVA base to enhance safety and confidence during use. Suitable for beginners, experienced athletes, and all body types. Versatile Use: The ankle stretch board includes an upgraded pull ring and helps relieve symptoms associated with plantar fasciitis, Achilles tendonitis, patellar tendonitis, shin splints, calf strains, ankle sprains, hip pain, tight calves, and hamstrings. Portable Design: Designed for easy storage and transport, this slant board takes up minimal space and makes a great gift for friends and family.