Spenco RX Clinically Designed—Doctor Recommended. At the heart of every Spenco RX Product is a unique SpenCore Layer—a precision engineered material that absorbs shock, reduces shear and friction and improves overall foot comfort. All Spenco RX Insoles are unconditionally guaranteed for one year.
An extra layer of comfort for any shoe. Lightweight cushioning protects against impact and reduced friction helps prevent blisters. Fits in any shoe or boot and over custom orthotics.