Gayle Bradley started making knives in 1988 and it became his day job in 2002. Best known for his hard-use knife designs that win World Cutting Competitions, his Air folder establishes him in the world of lightweight production gents knives. The Air is light as air with a featherweight glass fiber handle, titanium skeletonized internal liners and Michael Walker LinerLock. The blade is Crucibles version of tool steel called CPM-M4. It incorporates their CPM-powdered metal manufacturing process in a tool steel with a super consistent steel-grain structure, vaulting the steels already impressive impact resistance to even greater heights.