Second chance / Flip-flops

Flip-flops is a universal style slippers.
However, because the structure of the junction in front of it is the most easily broken.
Unlike single-layer design flip-flops,use two layers of rubber disc plug.
The first layer break,the second layer down to the plug,as a temporary contingency measures. In the foot surface,considering the comfort when pedaling,The tread surface to make a disc groove, foot will not step on uneven department
When you got home, you can use scissors or other sharp objects to be trimmed, can become a complete pair of flip-flops.