Nike has stepped up their running game once again, as their Nike Free lineup has been re-upped for 2014. Including in the update are Free 3.0, Free 4.0 and Free 5.0, with the former two remixed with Flyknit uppers, and the latter trying on a Hyperfuse outfit. Retooling the set from the ground up, Nike went back to the engineering room to switch the outsole’s flex grooves, now patterned in a hexagonal, honeycomb formation. Smoothing out the heel, the trio opts for a rounded-off design, fine-tuning the foot strike for a more natural motion. Check it out as Nike breaks new ground with their Free 2014 Running Collection in the photos below and mark your calendars for the Nike Free 3.0 Flyknit, Nike Free 4.0 Flyknit and Nike Free 5.0 will be available on Nike.com and in stores beginning April 3.