NIKE Free 4.0 Flyknit - Women's Running Shoes size 6

NIKE Free 4.0 Flyknit Women's Running Shoe. They are more cushioned than the 3.0 and closer to the ground than the 5.0 and 4.0. Hexagonal flex grooves offer six points of flexibility to let your foot move naturally in every direction. Nike Flyknit technology was inspired by feedback from runners seeking a shoe with the snug and virtually unnoticed fit of a sock. Preloved excellent condition.