Nike Spark Lightweight No Show Run Sock (Black/Reflective) Size:Men US 4-5.5 It combines with mesh panels

It combines with mesh panels under the arms to help moisture escape

Compression support to reduce muscle vibration

Fast InnovationNike AeroSwift technology integrates innovative features and materials with precision fit to deliver exceptional mobility and lightweight comfort to help you at your fastest from start to finish

Lightweight mesh back panel engineered to enhance breathability and ventilation

Nike Spark Lightweight No Show Run Sock (Black/Reflective) Size:Men US 4-5.5 It combines with mesh panelsCUSTOM SUPPORT. BUILT TO RUN. The Nike Spark Socks create a Breaking2 inspired fit that feels almost like going "barefoot". Supportive where it counts, they feature a ventilated pattern to help keep you comfortable with every step. Customized Fit Snug comfort from the toe to the top of the sock helps create an almost "barefoot" feel. A triangular underfoot arch pattern supports your medial and lateral sides, and lets you wear your socks on either