
Designers always seem to be on a constant quest for the next big material innovation. From the the first application of steam bending in the Thonet chair to things like Glass Snowboards, material exploration is forever married to object design. One of the materials making a minor resurgence in design projects is Tyvek—you know, the stuff you wrap around houses.
Made from polyethylene fibers, the synthetic sheet material is surprisingly strong and waterproof with a paper-like appearance. It would seem there are endless possibilities for what essentially acts like waterproof paper (such as Jiwon Choi's Vases), but among an incredible number of wallets and envelopes there are few other notable products on the market that incorporate Tyvek. At risk of inciting a Tyvek revolution, one might question where are all of the great design projects that make use of Tyvek? One of the cooler applications in the last few years is from New Jersey-based Civic Duty Shoes in the form of Tyvek sneakers.

Civic Duty has been around since 2009, headed by Steven Weinreb. The Tyvek uppers are dyed a variety of colors, allowing a bit of visual distance from their close relatives, the FedEx envelope and disposable work suit. While durability of the Tyvek isn't quite on par with traditional canvas or leather, they do offer extreme lightness and recyclability. While perhaps the perfect application would be a Tyvek portyanki—hard to deny that this is bold sneaker-vation.
The design of the shoes include a nod to classic high top, low top and slip-ons sneaker designs, but the material appeal of Tyvek might not extend too far beyond the design geek demographic. Either way, when you decide to invest in a new pair of kicks, remember that Converse high-tops don't employ the same technology as the construction site down the road.

Comments
I think the main issue here is breathability, There's a reason canvas and mesh are the #1 sneaker materials.
they should make some tyvek mukluk or mickey mouse boots- I would rock those in alaska
I think it's a clever idea but not quite the right application: these converse type trainers don't have a particularly light sole so the weight advantage is very slight. I am guessing these cost about the same or more as well. Couple the tyvek with a thin lightweight sole like you get in boxing shoes or driving shoes and you have an ideal second pair of shoes to pack for travelling or the beginnings of cheap cycling shoes.
Unstitched Utilities, by Kevin Crowley has been using tyvek for shoes for a long time now. I think it is fair to mention that many companies have been riding on their coattails because they are visible in trade shows, and international outlets.
Before I invested in a pair of cycling shoe covers, I would use old Tyvek race # bibs and fold them up and wrap around my socks before putting my shoes on for winter training rides. Learned that from one of the "old" guys.
Interesting to see it in a full shoe, but as James said, it's not breathable. At all.