Engineered for recovery and performance, Mercury's gradient compression enhances circulation while the unique design protects athletes' legs from the wear and tear of long tough workouts. The roomier toe, arch support and non-binding top band make them exceptionally comfortable and ideal for travel. Features: - 85% nylon/15% spandex - Anatomically accurate design (left & right) - 22-15 mmHg gradient compression - Superior moisture wicking - Unique flowmesh stitch pattern for foot ventilation - Anti-chafe padding on ball of foot & ankle - Roomier toe - Unique vertical stretch for arch support - Easy on and off 110% Size Chart