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.

Firm, adjustable arch support

Helps control, stabilize and balance the foot.  Heat moldable for a custom fit. SpenCore® Layer absorbs shock and reduces friction to improve overall foot comfort.

3/4 length is excellent for low-profile or tighter fitting footwear.

Shoe Size (US):

Size 1: Womens 6-6.5

Size 2: Womens 7-8.5, Mens 6-7.5

Size 3: Womens 9-10.5, Mens 8-9.5

Size 4: Womens 11-12.5, Mens 10-11.5