Biofinity Multifocal N is a progressive contact lens that comes with one lens made for Near (N) and one for distance (D). The contact lens should be adjusted by an optician for striking the optimal balance between near and distance. Biofinity Multifocal N Monthly Contact Lenses allow high oxygen permeability to the eyes, enabling them to breathe, stay white, and healthy. Moreover, the Aquaform technology creates a thin moisture layer on the surface to keep your eyes comfortable all day. Made for 1 whole month, take them out in the evening and store in a fluid at night.