Plastic construction makes the grey card impervious to water and resistant to bending.
The reverse, white side of the grey card can be used to set the white balance on your video camera. . It is the least reflective of any card made. Although all grey cards have a flat finish, most of the cardboard cards reflect hot kicks, yielding eroneous readings. Many consider this the best card made because of it's true matt finish and because it's coating is aerospace paint and not grey ink. Usually ships the same business day.