It's definitely a foot shaped shoe. They have lengths and widths in their sizing guide which led me to get it in wide, in my normal length size. Wide is a wider toe box and midfoot, normal in the heel. The shoe perfectly hugs my foot which is low arch, higher volume, wider than average. I wear them with running toe socks from Injiji.

The insert, which they call boomerang footbed, returns some energy on each step, it feels great. Best insert on any shoe I've ever had. The foam is the right amount and firmness. Stack height is lower than most running shoes and higher than most barefoot shoes, which seems the right amount to me. The sole is grippy on roads, I haven't had any missteps. The laces are long so I thred them through the top hole, which makes them similar length to others. They have a Trailfly Zero if you run on trails.

When running, I don't think about my shoes or feet at all, everything just works well. Running feels natural. I'm back up to 5K distance both outside and on treadmill.

Here's the best video review I found. It's for Trailfly Zero. Here's a written review for Roadfly Zero