The Moving Edge Safety Knife is a compact ergonomically designed safety knife. The knife is suitable for cutting cardboard, shrink wrap, bags, packing straps and cable ties. Its plastic construction and replaceable stainless steel blade make it suitable for use in most industries. The knife is safe to use and fits in the pocket, without the risk of damage to the user or clothing. Its secret is in the specially designed moving action blade; as the cut becomes more difficult, the blade automatically slices through the material.