Plus Flex Cover is the right solution for any document presentation. They have a crystal-clear sheet in one end and a matt-frosted finish on the other side. With the Thermal Binding Machines you can bind and crimp the spine for an optimal fit. The Plus Flex Cover has an extra sheet of paper on the glossy side of the cover. It makes sure that the real first page of the presentation doesn’t get the static electricity of the crystal sheet, and glides by itself in the liquid resin.