Heavy-duty expanding wallet features a 24 point reinforced flap with extra-thick elastic cord for added security & rip-proof, fully lined, Tyvek gussets to protect documents in transit. Extra-long flap completely covers your legal-size contents, even when the file is fully expanded to 5-1/4. Extra-wide wallet accommodates file folders inside. Extra thick covers have a 24 point front & back. Added Tyvek strip inside the back cover protects against tearing along critical stress points. "