HP Pre Punched Premium Laminating Pouches A4 125 micron (Pack 25) 9122 Special features of these HP Premium laminating pouches are a thicker film of 125 microns and a ring binder perforation, which is suitable for all DIN A4 folders. This means that your laminated documents will not be damaged when they are punched and filed. These transparent laminating pouches with a glossy surface can be used with all hot laminators, provided that the micron number specified by the manufacturer is not exceeded. The films are exclusively intended for hot laminating .