Targeted Compression and anatomical design provide an unmatched Custom-Like Fit; High density cushioning provides cushioned comfort without the bulk; Anatomical design enhances fit, delivering maximum comfort and protection by eliminating blisters; The Perfect Toe (No irritating toe seam); 5" cuff is perfect for trail running or cycling; 94% Nylon 6% Spandex; Machine wash cold. Tumble dry. No bleach or fabric softeners. For best results, wash socks inside out