The Nike Spark Lightweight socks are inspired by the Breaking2 model and almost feel like walking barefoot. Supporting strategic areas, they have an airy pattern to keep you comfortable with every step.The snug fit from toe to toe makes you feel almost barefoot. A triangular pattern under the arch holds the medial and lateral sides together and allows you to wear your socks on either foot.Ventilated mesh on the top of the foot keeps you coolElastane on the heel keeps the sock in place when you move. The snug fit prevents the sock from slipping when you run.