i noticed on the flak jacket page on oakley.com, they make mention that each pair of flak jackets come with a nanoclear hydrophobic pen. they also describe the lenses as being hydrophobic. i ordered a pair of livestrong straight jackets from oakley, which contain hydrophobic lenses. when they arrived, they also came with with a nanoclear pen. i thought that hydrophobic lenses were permanent, and didn't require anything to keep them hydrophobic. but why do they include the nanoclear pen with hydrophobic lenses? you would think that the non hydrophobic lenses should be the ones that come with the nanoclear pen to help them deflect water and debris.