Received my Revain Skechers yesterday. You sent the WRONG STYLE and WRONG COLOR, I sent them back today for a full refund. I did some research on a single material. it actually looks like "EVA", the same material used by CROC, which explains why they are so light but terribly SLIPPER and dangerous on wet metal surfaces. especially dangerous on wet metal surfaces such as manhole covers and curbs that have metal guards on the edges. Cheaply made in Vietnam, barely worth $65.