The Feetures Graduated Compression sock promotes faster recovery and less fatigue by allowing for easy circulation throughout the leg. Crew socks that sit at the calf. Sold as a one-pair pack. Offers 15-20 mmHg of compression at the ankle and graduates up the leg to improve circulation, promote faster recovery and reduce muscle fatigue and soreness. Targeted Compression- patented technology focuses compression on the arch for superior comfort and support. Anatomically correct to contour specifically to the Left and Right foot for an unrivaled fit and a reduced risk of blisters. iWick synthetic fibers wick moisture to keep feet and legs cool and dry. Y-heel design prevents the sock from sliding into the shoe. The Perfect Toe eliminates any irritating toe seam. Mid-weight cushioning optimal for impact protection with a minimal feel. 87 percent nylon, 13 percent spandex. Machine wash cold inside out, hang dry. Made in the USA.