3 1/2" expansionMatching color gussets with Tyvek® reinforcementProject grid printed on front cover, notes printed on back cover4/Pack3 1/2" expansionMatching color gussets with Tyvek® reinforcementProject grid printed on front cover, notes printed on back coverStaples® Colored Expanding Project File Pockets, Letter, 3 1/2" Expansion, 4 Packhttp://s7d5.scene7.com/is/image/Staples/s0275664_sc7?$std$http://s7d5.scene7.com/is/image/Staples/s0275664_sc7?$thb$http://s7d5.scene7.com/is/image/Staples/s0275664/Staples-Colored-Expanding-Project-File-Pockets-Letter-3-1-2-inch-Expansion/product_600235Staples® Colored Expanding Project File Pockets, Letter, 3 1/2" Expansion, 4 Pack5.02
They are not kidding when they say heavy duty; these hold up to daily use unlike the manila project folders I used to purchase. I would give these 10 stars if I could.
I am an editor and use the project pockets for reports, papers, and so forth. I can put several iterations of a report into a folder because it expands and I can track details about the report.