The Spyderco Sage4 honors the late Al Mar, who changed the knife industry by adding a backlock, positioned mid-way down the handles spine, to his folding knives. Positioning the lock release closer to the blade shortens the locking arm, making it easier to unlock while increasing the locks tension and strength.
The Sage 4 has a flat ground S30V stainless steel blade and arizona ironwood handle with titanium bolsters and a reversible wire pocket clip.