Adjustable sport helmet

A sport helmet has an outer shell including a first shell and a second shell movable relative to the first shell; levers hingedly connected to the first shell on left and right sides of the sport helmet for adjustably securing the first and second shells together; and finger-engageable locking actuators for selectively allowing movement of the levers from the engaged position to the disengaged position, the finger-engageable locking actuators being engaged to anchoring projections receivable within anchoring apertures, the finger-engageable locking actuators movable between a locked position and an unlocked position, wherein in the locked position movements of the levers relative to the first shell are limited via the anchoring projections, and wherein in the unlocked position the anchoring projections are disengaged from the anchoring apertures such that the levers are pivotable between the engaged position and the disengaged position.