Spot Any Tampering With a secure gummed seal keeping your documents concealed, tampering becomes easy to spot and just a quick look alerts you to possible meddling. A security tint helps to protect your messages from wandering eyes, while the square flap on these envelopes creates a uniform appearance, allowing for an orderly and reliable standard across all of your business mailings. Universal Envelopes No need to worry about finding envelopes that accommodate your software mailing system. Package important documents such as payroll and year-end tax paperwork knowing that the Staples envelopes protecting them accommodate most software mailing systems, providing you with a universal tool at your disposal. Choose Your Size Use these versatile gummed envelopes to deliver checks or forms to clients, employees or business affiliates. The choice in size allows you to continue delivering important documents in quality and durable envelopes across departments, creating a seamless stream of secure mailings and making your business stand out from the crowd.