Built similarly to the Prio (See further down on this page for that review), it is an incredibly comfortable and flexible trail shoe. These, like their "street cousins", the Prios, have a 2mm sock liner that is easily removable. If the liner is removed, you don't sacrifice any comfort. The foot-bed incorporates Xeros barefoam for a really comfortable ride, even over rough terrain. I even wore these on the street some, just to test the sole for wear. Xeros have always worn well, and these seem to be no different. The larger lug-type tread don't seem to be showing any appreciable wear, even from asphalt.
But......back to what they are designed for! The soles on these are still, (of course!), zero drop, and the uppers are a really comfortable fabric. My feet aren't always the easiest to fit, but these have a crazy-wide toe box and combined with the upper fabric, I experienced NO discomfort, even when they were brand new. I choose to wear them without socks, and the interiors are so well made that there are no rubbing seams or other spots.
I also did a video review on these that you can find on the website by following the link to the right. Please check it out!
I have always liked Xero's products, since buying my first two pairs in 2010. They have always produced consistently quality products at reasonable prices, and their customer service is top notch. Their site has detailed instructions on determining fit, and they always seem happy to answer any questions or give feedback on any issues that may arise.
Please give the new TERRAFLEX a try if you ever run trails or anyplace rough. You will be happy with these. I've never tried a better trail shoe. Check them out through the link at the top right!!