Smead Tyvek Gusset Expanding Wallet With Elastic Cord, Letter Size, 5 1/4" Expansion, Navy Blue - The Smead Tyvek gusset expanding wallet with elastic cord fits neatly inside your filing system without bulging out the side gussets for a professional look. Place letter-size, 8 1/2" x 11", sheets of paper within this expanding wallet, which features a 5 1/4" expansion to accommodate even your largest files.