OPTP Slant (Pair) - Foam Incline Slant Boards for Calf, Ankle and Foot Stretching Helps prevent and treat common lower-leg and foot problems Made of lightweight but sturdy weight-bearing foam Perfectly suited for stretching and weight-bearing/strengthening exercise Aids in Achilles tendonitis, heel spurs, shin splints, calf strains, plantar fasciitis and more Sold as a pair; each measures 11.75" L x 11.75" W x 3.75" H with 18 degree incline