Oxygen permeability (DK 163 ISO / 189 Fatt) of Menicon Z achieved beyond the value of all other GP materials.

Menicon Z is the first to be classified in the "hyper-oxygen transmissibility" category by a leading expert in the field of oxygen permeability research*.

*Benjamin W J.EOP and Dk/L: the quest for hyper transmissibility. Journal of the American Optometric Association