Oakley SI Ballistic M Frame 3.0 with Black Frame and TR45 Prizm Lens Delta Plus Hearing Protection The pen is 5 1/4″

The pen is 5 1/4″ open

Lateral Exchange System allows for rapid change of lens colors for quick adaptation to any light condition

After your Rx lenses are installed into the U-Rx by an optometrist

Precise placement of bifocals allows for distortion-free forward vision and increased safety

work areas

Oakley SI Ballistic M Frame 3.0 with Black Frame and TR45 Prizm Lens Delta Plus Hearing Protection The pen is 5 1/4″Oakley SI Ballistic M Frame 3. 0 Tactical Sunglasses quite literally took the 2. 0 to the next level. All the best features of the 2. 0 remain, but with some key improvements for military and tactical personnel. To better accommodate peripheral gear such as night vision and comms devices, several design enhancements were made. First, the temple stems were thinned out to provide a good seal for over ear systems, whether with or without a helmet. The