Oakley SI M Frame Helo Kit Delta Plus Go-Specs which not only don't block

which not only don't block all the blue light

not replace

and many competitive models

Optional RX-insert frame secures in the inner side of the frame

DEWALT ToughCoat hard-coated lens provides tough protection against scratches

Oakley SI M Frame Helo Kit Delta Plus Go-Specs which not only don't blockThe Oakley SI Helo Gasket fits Oakley SI's M Frame 2. 0 and 3. 0 Ballistic Safety Glasses. The snap in Helo Gasket is a lightweight, soft rubber gasket that securely installs behind the Ballistic M Frame's lens. The Helo Gasket creates a facial seal that's designed to block the wind, dust and flying debris from your eyes. The Helo Gasket Kit is ideal for Airborne, Rotary Wing Operations, and other dusty environments. The Helo Kit is fully compatible