Stay comfortable and fast with the Thorlo Experia Jet Micro Running Sock. Tailored for performance, this running sock features Thorlo padding and specifically placed sculpted pads to gently soften your step. CoolMax® fabric pulls sweat off skin so your feet stay cool and dry. Lightweight, supportive fit ensures a speedy and confident performance. Achilles tendon pad protects against rubbing and chafing. Flat knit toe seam for a comfortable fit. 66% CoolMax/20% nylon/13% polyester/1% elastic. Made in the USA.