The Cold Steel line of Training Weapons are made of heaviest grade polypropylene available and closely duplicate a real weapon in length, size, weight and feel. While they're not quite as rigid as wood, they have the winning advantages of being virtually unbreakable, remarkably stiff and cut resistant. Unlike wooden weaponry these will not rot, crack, chip or splinter and eventually become useless. The Santoprene rubber blades are soft enough to prevent the likelihood of most bodily injury. They do however, have a level of firmness that might cause injury to the face or the eyes, so it is recommended that appropriate eye protection or a fencing mask is utilized at all times when using a Cold Steel® rubber training knife.