Product Details 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 95% Nylon 5% Spandex for High Top Stripes & Ascent 98% Nylon 2% Spandex for Crypto 97% Nylon 3% Spandex for Peak 94% Nylon 6% Spandex All Others. Machine wash cold. Tumble dry. No bleach or fabric softeners. For best results, wash socks inside out.