For Xero Shoes, we have a relatively high-tech manufacturing process, especially for our Z-Trail sandals, which have a three-layer FeelLite sole. The high-tech materials let us make something ultra-ultra-lightweight, incredibly, incredibly flexible so it lets you have natural foot movement, but is still really protective, really durable, really comfortable.
We bond three layers together. Our FeelTrue rubber is on the bottom surface for great grip and traction and durability. The middle layer we call TrailFoam, and that's what evens out the bumps. It's a force dispersion layer. And our top layer we call BareFoam. It has just a tiny amount of padding built into it that you would be surprised – it doesn’t seem like much when you feel it with your fingers, but when you put it on your foot, your foot reads that as, “Wow! That's a lot of comfort and protection.” It also has this heel cup on the back to help keep your foot stable and centered, and also help keep debris out.
We use tubular webbing and laces, so there are no edges that to dig into your skin.
Then, we've developed exclusive hardware that lets you adjust the tension really, really quickly and easily and securely. Finally we have an adjustable heel strap so you can move your foot forward and backward and get just the perfect fit.