The Nike Free Flyknit Hyperfeel is likely about as close to barefoot as a Nike shoe can get you. The upper is lightweight, superlatively breathable Flyknit, reinforced by Dynamic Flywire that peeks out at the lacelets.
Beneath that is the overtly flexible Free sole unit. The exact number isn’t clear yet, but if there’s ever going to be a Free 2.0 sole, it’ll probably look like this. No release date is on the books at the moment, but the shoe is expected by Fall/Winter 2013.
Photos via SA.