The amazing rainbow colors are the result of applying the titanium-oxide coating. The coating is created by a process in which metals are ionized, then permanently deposited as a microns-thin metal coating on the blades. The coating is durable and scratch resistant and looks amazing. Like other Scallions, the Rainbow Scallion features a handy 2 1/4-inch blade, making it the perfect size for lightweight and convenient pocket carry. The high-carbon stainless steel blade offers good edge retention and excellent corrosion resistance. Of course, one of the Scallion's coolest features is SpeedSafe assisted opening. With SpeedSafe, you can open the blade one-handed. Just pull back on the ambidextrous blade protrusion or push on the thumbstud and the blade moves out of the handle, ready for use. For safety, the Rainbow Scallion has a secure frame lock to keep it locked safely open during use and a Tip-Lock to keep it locked safely closed during transport.