Seriously, why did there need to be a nano 7 & 8? Im a size 7.5 with a wide ball of my foot, normal width everywhere else. I tried the 7 & 8 and they were both too narrow for me and I would guess for a lot of other people BUT the 6 is perfection! It has a nice wide toe box, perfect for spreading out my toes and gripping the ground for powerlifting. Also very flat bottom for lifts. They are super comfortable, I don't even feel like Ill need to break them in. Excited to try them out!