2XU Compression Calf Guards 100% Other Fibers Imported SUPERIOR DESIGN: 70 Denier Invista LYCRA for Certified Gradient Compression | Medical circular 360 degree knit construction creates a consistent yet powerful pressure ENHANCED PERFORMANCE: Graduated Compression Fit for circulatory benefits & faster recovery | Increased oxygen to muscles REDUCED INJURY, FATIGUE & SORENESS: Muscle containment for reduced vibrations & oscillation, less muscle fatigue & damage | Minimize Shin Splints ADVANCED TECHNOLOGY: Extreme Moisture Management | SPF 50 Sun protection | Breathable & Lightweight ACTIVE USE: Running, Endurance Activities, Workout Sessions, Competitions & Races, General Sporting Activities