Capacity:Each folder sleeve project pockets can hold 30 sheets. US Letter / A4 Size Folders : Folder is 11.5 in x 8.9 in (292x 226MM),plastic sleeves for paper 8.5×11,the sheet protectors 8.5 x 11 is 20C(0.20mm)thickness,you can put the clear sleeves in your bag for easy carry.