I'm obsessed with these shoes :) I've been wearing barefoot shoes for several years but have never found any trainers that are comfortable. They all scrape my skin or pinch in a weird area, and I do not love to wear socks (sensory things), so this has been an issue. The Flow model is super comfortable, fit like a glove and are breathable and soft. I am a dancer and foot/ankle articulation is important to me when I'm strength training, and these are perfect. No socks needed! I can't wait for the red to be back in stock in my size!