Made of Highly Conductive Oil-Resistant BioTrode™ Rubber the Practitioner Eye Mask securely fastens to the eyes with a flat adjustable cord utilizing a cord lock to conform to unique head sizes. An eyehole is cut in the mask so the Practitioner can see while working on themselves. Reverse the mask for either eye you are working on. FOR SCIO EYE PROTOCOLS THIS IS A MUST! THIS PRODUCT REQUIRES THE PURCHASE OF THE  “QUICK RELEASE” UNIVERSAL POINT PROBE WIRE CONNECTOR 8′ ITEM NUMBER – MC8.