Dr. Scholl's® Prevent Pain Protective Insoles stops the leading cause of pain in key lower body joints—your foot, knee and lower back before it occurs with the Tri-Protect System™. Its full foot combination of cushioning, support and shock absorption defends against the muscle co-contraction that leads to lower body join pain. Footwear Type: Insoles; Size Group: Women's Size 6 to 10; Materials: Polyester; Polyurethane Foam; Color(s): Purple.