The Optitrack Facial Reflective Marker Kit
The Facial Reflective Marker Kit contains 50 markers (hemispheres) 4mm in diameter with adhesives. These markers are highly recommended for the sides of the face or for larger facial capture volumes. The markers are limited to one or two uses, it is recommended to have low oily skin for better adhesion. It is also recommended to use Spirit Gum glue for bonding.