SpencoŽ Arch Cushion 3/4 Length Arch Supports Same long-lasting quality insole material as the slip-in insole but with an added soft arch cushion for extra comfort. Available in full length cushion for heel to toe comfort or in a 3/4 length cushion extending from the heel to the base of the toes. The 3/4 length allows extra toe room in tighter fitting shoes.