Protos Safety Glasses - Optical Insert Block This ensures that the glasses

This ensures that the glasses are back-ventilated

and also in black

Rope compatability8 - 13mm

tailored perfectly for the professional chainsaw user

Its strap-based construction makes it the most compact and lightweight system on the market

Protos Safety Glasses - Optical Insert Block This ensures that the glassesThe Optical Insert has been specially designed for the Protos Integral Safety Glasses. The frame can accommodate optical lenses up to + 4 dioptres into the glass insert, fitted by an optician. The Optical Insert complete with optical lenses can then be easily clipped to the bridge of the Protos Integral Safety Glasses, leaving them fully protected behind the glass of the Safety Glasses. A major advantage of the integrated glasses insert is that there