Does any one know if the lenses on the Instinct Zebra anti-fog are removable? I lost my old Instincts that had replaceable lenses, and still have the old lenses. These are very good sunglasses.

Tech Specs:

Frame:

plastic 

Hinge:

plastic 

Lens:

Zebra photochromic 

Interchangeable Lens:

yes, sold separately 

Polarized:

no 

Face Size:

medium to large 

Case Type:

soft 

Nose Pads:

no 

Temple Pads:

yes 

Recommended Use:

mountaineering, alpine climbing, biking, and hiking 

Manufacturer Warranty:

1 yeat