These Tactical Shin Guards are designed to be Tough, Light Weight, and extremely durable, made from Eight 8mm x 300mm high quality Black hard coated aluminium rods. They have been tested and proven in competitive competition including the KMA Association Shadow Trials, and Mock Trials against live blades and environmental challenges from falling or being struck. They will protect your lower legs extending the length of the Tibia & Fibula bones of the Shin against excessive damage and soft tissue injury if struck, but only towards or against the aluminium rods of each Shin Guard. When Aluminium is struck with a sharp blade the metal will tend to buckle or dent depending on the force behind the strike, as with Steel that tends to fracture with equal forces applied. These are a must have item in reducing personal and unnecessary damage to your lower legs either in the Dojo, Field training, or competitive practices.