Features matching-color Tyvek (R) tape Two 2in. embedded prong fasteners in positions 1 and 3 keep letter-size documents secure and in order. Made of 25 pt. pressboard. Nature Saver File Folders part of a large selection of office supplies. Nature Saver 1/3-Cut Pressboard Fastener Folders, Letter Size, 2in. Expansion, 100% Recycled, Gray Green, Box Of 25 is one of many Top-Tab File Folders available through Office Depot. Made by Nature Saver.