Top tab file folders fit neatly inside without bulging out the side gussets. Protective flap with elastic cord closure ensures that contents stay put. Works with your existing shelf filing system. Double thick front & back panels for extra strength. Expands up to 5.25" for greater storage capacity. Full-height redrope gussets, with rollover tear resistant material reinforcement at top for durability. Pocket / Wallet Type: Files / Papers; Size: Letter; Overall Expansion: 5.25"; Closure Type: Elastic Cord.