Here is a list of characteristics (both plus and minus) inspired by www.snarkynomad.com, that you should keep in mind.
Advantages of Tyvek shoes:
Water-resistant: Tyvek is used to protect buildings from the elements while they’re still under construction, so they’ll keep the rain from soaking your toes. Tyvek manages to do it more cheaply than certain alternatives. You can maximize this benefit by getting the styles with as few eyelets as possible, so that the toe area is seamlessly smooth, with nowhere for rain to sneak in.
Breathable: And wow, they are really breathable. Better than some natural canvas fabric shoes, which is surprising, given how water-resistant these are. These are vastly more breathable than you might expect.
Durable: There’s probably no way you’ll end up ruining them. Tyvek is both tear-resistant and abrasion-resistant, so not only will they last for many years, but they’ll probably look brand new the whole time.
Light: Tyvek is literally paper-thin, making them exceptionally light, and easier to squish flat than bulky, rigid alternatives, like leather. There’s usually a soft fabric lining on the inside for added comfort, though.
Smooth: This might not seem like a big deal, but it’s ridiculously difficult to get these things dirty, and they’ll clean up with a quick swipe. That’s nearly impossible with other fabrics, particularly cotton, and it’ll help you look presentable.
Recyclable and vegan: In addition to all of the above, they have sustainability, an extra bonus as well.
Basically…they’re the perfect material for lightweight travel shoes.
It’s not all sunshine and roses, however. Tyvek has some potential downsides, though not necessarily any "deal-breakers".
Disadvantages of Tyvek shoes:
Uncushioned fabric: This is probably the most significant potential problem, as the super-thin fabric can create pressure points, whereas cushioned shoes (like running shoes) do a better job conforming to the shape of individual feet. Just make sure to try them out to see how they feel. Keep in mind they’ll soften a bit after being worn a few times, though.
Crinkles: The weathered, crushed paper appearance might not go over well with certain people, and when they’re brand new, they can make crinkly noises while you’re walking. This will also get better with time.
Casual styling: Most of the Tyvek shoes I’ve seen are styled as brightly colored sneakers. You might not care the slightest bit about this, but they might be too casual for somewhat fancier settings. Just don’t be surprised if you get turned away from an upscale club because your shoes aren’t fancy enough.
The Tyvek shoes currently available are quite similar in comfort and style to something like classic Converse or Vans: Thin, light, and casual, but with the added benefits of Tyvek described above. They’re not serious boots, but they’ll do just fine in most situations.
The only changes that would be nice in the future would be slightly fancier styles, for those who want something a little classier than sneakers (when it comes to travel, fashionable is actually functional). A super tough, water resistant, lightweight, highly breathable, relatively packable pair of shoes is an ultralight traveler's dream come true.
For those who care about social responsibility, each year an exclusive shoe will be uniquely designed with 100% of the profits donated to a social cause benefiting those in the United States.
For more about Civic Duty, visit their website: www.civicdutyshoes.com