Manta Ray by Advanced Fitness, Squat Load Distribution Device Permits you to focus on the squat movement and technique rather that discomfort, numbness or shearing muscle trauma Unique weight distribution principle takes the bar off your deltoids and vertebrae, transfers weight across your trapezius muscles and reduces risk of injury Maximizes mass-building potential Easy to use. Snap it into the bar to keep it perfectly centered on every set. Provides a stronger connection compared to a regular, foam-based barbell pad Protect against crush trauma. Your body's energy is directed to mass-building muscle fibers