Introducing the next generation in 2XU Compression technology – MCS (Muscle Containment Stamping) for targeted compression. MCS is a revolutionary fabric support system traced over key muscle, tendon and fascia groups to focus greater compression power to wrap precise areas and reduce muscle oscillation and damage. Engineered with powerful PWX FLEX (70D). The Elite MCS Compression Calf Guards offer unparalleled power and protection against muscle trauma during intense activity. Graduated compression also offers impressive recovery benefits post exercise.Features- MCS (Muscle Containment Stamping) – Targeted compression traced over key muscles, tendon and fascia groups- Flatlock seams to reduce chafe for greater comfort- Powerful Invista LYCRA for exceptional fit, support and recovery- Antibacterial and UPF50+ sun protection- High filament yarns for dryness – wicks sweat from the skin to fabric exterior- Lightweight and quick dryingKey DifferenceMCS Elite Compression Calf Guards: Utilizes a 70 Denier PWX FLEX Compression Fabric with Muscle Containment Stamping targeted to trace over key muscles, tendons and fascia groups to focus on greater compression power and recovery.Compression Calf Guards: Utilizes a lightweight 70 Denier PWX FLEX Compression Fabric to focus primarily on muscle containment.