It's a kit. You make it and then you have the skinniest sandals you can get. Simple really... Basically you get a thin sole unit 4mm in this case and a 6mm if you want the heavier version. You also get a set of cords and a hole punch. That's the kit. Following the instructions online or in the kit you measure your foot. Punch holes for the laces and assemble your own sandals, cutting off any excess sole rubber (they come in size bands and you cut to your specific fit). They are surprisingly good… Full review
If minimalist is your thing these are a good offering. Having run more than 200 miles in them and used them for day-to-day wear in between they have been robust and are very light. I run in sandals and have used a mixture, over time, to include Luna and Earth Runner sandals. These are a slightly different take in that they use an over strap in the front of the sandal so are very nice for those people who don't like things between their toes. Light on the foot they are very hard wearing, but don't… Full review
Super lightweight. Great camp shoe! When I started looking for a good camp shoe, I took under consideration many of the shoes mentioned in the hiking blogs. I've owned Crocs (and knock-offs) before, but they wore out quickly. I have worn sport sandals through the summers for several years and enjoy the comfort, but seems like I'm buying a new pair every year, too! But the search is complete and Xero Z-trek sandals are the winner! From a hiking stand point, for trail shoes, they are very light (9… Full review
I tried these on a couple of hikes, for use as a camp shoe, for swimming and creek crossing, etc. But I soon gave up on them, not just due to the poor sole protection and the lateral movement that were cited, but also due to dirt and gravel quickly getting into the sandals (drier conditions) and water (wetter conditions). The lightweight simply wasn't worth it to me. I recommend something sturdier unless you have ideal trail conditions and feet that can handle the stress. Added: Try "Gold Pigeon"… Full review
Xero’s Z-Trail is a minimalist sandal in a number of ways. The sole and midsole together are less than a centimeter thick, with no thick heel or arch support. They secure your feet with a hook and loop heel strap and a continuous polyester strap that you pull to tighten. They are unexpectedly good at protecting the soles of your feet for such a light and flexible sandal, and traction is very good to excellent. Lateral support is an issue, though, and you can definitely feel roots and sharp rocks… Full review
Xero Shoes, which makes barefoot running sandals, was originally called Invisible Shoes.