[ENDURANCE PERFORMANCE RECOVERY - Improving oxygenation in the blood increased energy for endurance better performance reduced muscle fatigue and shorter recovery time after a workout. LAB TESTED MILD GRADIENT COMPRESSION - 15-20mmHg compression greatest at the ankle and decreasing up the thereby leg encouraging blood flow to the heart EASIER TO PUT ON - Ultra stretchy core-spun yarns means more comfort while easier to get on. DRY SOCKS - High-tech fibers remove perspiration for a drier & more hygienic sock environment 100% MADE IN THE USA - Each pair of socks is manufactured in the United States. Machine washable. The unique core-spun yarn provides a comfortable form-fitting design.]