Developed by Pilates Therapeutics, the Activ-Wedge addresses asymmetries caused by scoliosis or other imbalances. Use in seated position to even out hips, or during standing work. Great to position hips in exercises like Mermaid. Pair (1 black and 1 blue). Dimension 2"(0.79cm) x 4"(1.6cm) x 6"(2.4cm) View our complete Physical Therapy Rehabilitation catalog.