I was really curious about this shoes.

People are complaining that they look cheap and it is not so. These shoes have a leather insole and are fully lined with fabric; however, no arch support at all.

Before I purchased three of these pair of shoes (pink, yellow and gray), I went to Wikipedia to find out what Tyvek is and this is part of what I found:

"Tyvek (pron.: /tavk/) is a brand of flashspun high-density polyethylene fibers, a synthetic material; the name is a registered trademark of DuPont. The material is very strong; it is difficult to tear but can easily be cut with scissors or a knife. Water vapor can pass through Tyvek (highly breathable), but not liquid water, so the material lends itself to a variety of applications: envelopes, car covers, air and water intrusion barriers (housewrap) under house siding, labels, wristbands, mycology, and graphics."

You put them on and they look so cool! Of course if you are looking for an expensive (look) pair of shoes, these are not for you.  I was sold when I read that Tyvek is highly breathable. Usually I wear Birkenstock, but I have fabulous insoles and now I can wear these shoes very happyly.

On top of that, the shoes are very comfortable and my sons (seven and six) love them!