Lightweight support with barefoot feel. Nike Spark Lightweight socks offer a slim design with sweat-wicking technology and mesh material to keep you dry and cool. The extra thread in the sole and ankles provides subtle cushioning and gives you a secure hold with every step. Reflective elements are located in critical areas and ensure an eye-catching look from previous versions. Reflective kilometers. We've updated our Spark Lightweight socks with reflective details on the collar of the shoe. Reflective threads are also embedded in the mesh pattern on the back of the foot. LIGHTWEIGHT TO WEAR: Lightweight material ensures barefoot comfort. The extra thread in the sole and ankle area ensures minimal cushioning in key areas. Breathable mesh on the top of the foot keeps you pleasantly cool. The striped pattern on the foot shows where the mesh was placed. Additional benefits: Moisture wicking technology wicks sweat away from the skin for faster evaporation and thus allows dry comfort Arch band follows the course of the arch for a secure fit and first-class comfort. Product information: not suitable for use as personal protective equipment. 84% Nylon, 14% Elastane, 2% Polyester Machine washable