Parallel Polarized Gray Replacement Lens Size:- this mid-layer has four-way stretch

this mid-layer has four-way stretch giving you complete freedom to move

Thanks to special reinforcements

The other major unique advantage of this configuration is that you are able to create a 3-to-1 mechanical advantage

a new suspension system for better transport

It now uses a chafe-free seam construction that's perfect for a pack will and keep you going farther

Parallel Polarized Gray Replacement Lens Size:- this mid-layer has four-way stretchSmith Optics' interchangeable performance series provides sleek, lightweight performance and convenient options for changing conditions. These replacement lenses feature Smith's famous carbonic TLT lenses for clarity, and a hydroleophobic coating for moisture and smudge resistance.