I USED THIS TO LAMINATE COOKBOOKS FOR MY SONS KINDERGARTEN CLASS. THE SHEETS CAME OUT THICK AND SLID EASILY THROUGH THE LAMINTeR. Its expensive but worth it.
I use the these pouches to laminate my home schooling materials (charts graphs flash cards etc...)that I need to last through the year. They also work great to make "dry erase" boards. Just don't use the alcohol to wipe off. Use a dry cloth or even easier a napkin. The pouches seal nicely being run through 1 time on my GBC laminator. I like that I can easily adjust whatever I'm laminating and that they come out very clear. They seem to be standing up very well to my elementary kids!
These are excellent heat lamination pouches. They form a very good seal even though they are the 5 mil thickness. I have had trouble getting a good seal with other 5 mil pouches especially when laminating thicker paper.