Extra-wide file pockets are sized for use with standard, letter-size file folders. Ideal for both frequently accessed files and long-term storage. Heavyweight material is strong enough to handle filing bulky records on a desktop or in a file drawer. File pockets are made of rip-proof, 100 percent Tyvek-lined gussets, extra-thick 29 point front cover, and 32 point back cover. Expansion is up to 3-1/2".