I am into barefoot shoes, so when I came across these normal-looking, supposed "barefoot" sandals, I just had to have a pair. Unfortunately, upon arrival, I was disappointed. Sure, these have zero-drop, but the "barefoot" aspects of these shoes stopped there. The biggest let-down was how thick the soles are. I didn't measure, but they are much stiffer and thicker than any other barefoot shoe I've ever used (including other Merrell barefoot shoes). When I put the shoes on and went for a quick walk, I could not feel the ground beneath my feet. No, instead these were like wearing any "normal," unpadded, zero-drop sandal (and there are plenty of those already on the market). Additionally, these sandals have a partial arch support. I say that because the sole curves up and cradles the arch of the foot. They are not full arch supports because there's nothing beneath the arch-curve, but they do impact the natural mobility of the foot a little because the sole is a bit firm (which is contradictory to the "barefoot" shoe idea). As with other Merrell barefoot shoes I've tried, these did not seem wide enough for wide-width feet. I have normal-width feet and I could not wear these with my ultra-thin (2mm) posture-control insoles (which is a deal-breaker for me), because there was not enough room in the toe-strap area for my toes to spread naturally when I walked. I would also suspect that if you wanted to wear them with socks, they would be too tight in that area as well. Unfortunately, the toe-strap does not adjust at all. These were cute. They hugged my foot well. They seemed to be well-constructed. If worn without socks or insoles, they should fit non-wide feet well. These shoes do not have a barefoot-style sole, and they do not have any padding (which seems like a lose-lose on both sides of the shoe world, if you ask me). I sent mine back the next day.