Drymax Running Hyper Thin socks have been specially designed to be the world's lightest and thinnest running sock. Dual layers knitted together draws moisture away from the foot and to the outside of the sock to maximize evaporation. Breathable mesh stripes through out the top of the sock and around the arch keep feet cool and dry. Anti-slip wedge around the ankle helps prevent the sock from slipping down. Flat toe seam helps reduce rubbing across the toes. Micro-Zap® silver antimicrobial fibers actively fight odor-causing bacteria, helping keep socks odor free. Developed for mild to hotter weather conditions.