A rare and gorgeous set of Lewis Design leather shoes with springolator insoles! These shoes look like they have hardly been word and the gold insole is left in perfect condition!
US Size 7N (this is a narrow shoe so be sure you keep this in mind before purchasing.)
4" heel
Condition: Great vintage condition with no major signs of wear and tear. 
The history of the "Springolator" design:

She had noticed that men’s boot liners were designed to keep the foot from slipping forward in the boot, by creating tension between the shoe and the bottom of the foot. So, she took a similar approach with the mule, taking a thick piece of elastic and imbedding it into the sole of the mule. Where the arch of the foot is, the elastic piece can be seen, and this is where it does the work.
When a woman takes a step, the shoe no longer falls flat with the rest of the shoe, but it is sprung back up to the foot, allowing for the shoe to stay on and the reducing the noise it would have made slamming to the floor, thus resulting in the name Springolators.   

Beth Levine’s Springolators became so in demand that she made private label shoes for several popular companies. With her innovative and revealing designs she became known as “The First Lady of American Shoe Design.” She exposed the foot and made it comfortable to do so, revolutionizing shoe design and the stigma of open toed shoe culture.

This item is sold from a vintage boutique in Washington.