design a special shoes - open to bidding

The idea is to use the parts of the shoe (shoe base and shoe cover) separately. Then combine them depend on the consumer need. Customer can has one shoe base with multiple covers which means he has a multiple shoes with different colors and styles. The shoe base has a multiple holes that contain a small clasps. Each clasp should hinge on the clasp that on the cover. To compose the cover you should ensure each clasp is in the correct position. When releasing cover, you should press on the side of each hole on the base to make the base clasp move away from the cover clasp. Then pull the cover gradually to top to release all the clasps. The figure shows two different styles (shoe, flip flop) that could be composed in single base. There is no limitation for the design of shoes covers. Also customer can have multiple bases with different colors to match it with his shoe covers. We are giving consumers the opportunity to design they own style.