Need professional-looking envelopes for your business or personal mail? These brown security envelopes are exactly what you're looking for! The 9.5x4.5 inch size is perfect for cheques, invoices, statements, and other important documents. The 80GSM thickness means they're durable and won't tear easily like cheap envelopes. The security tint prevents anyone from seeing the contents inside, even when held up to light - perfect for confidential documents like paychecks, financial information, or personal letters. The matte brown finish looks professional and elegant, and they work with both laser and inkjet printers. The peel-and-seal closure makes them quick to seal without licking messy glue. With 50 envelopes in the pack, you'll have plenty for your mailing needs. Great for home offices, small businesses, or anyone who sends mail regularly. They're much better than those flimsy envelopes that arrive torn or damaged. The premium paper quality means your important mail will arrive looking professional and secure. Whether you're sending bills, contracts, holiday cards, or business correspondence, these envelopes provide the protection and professional appearance your mail deserves. Stop worrying about your sensitive documents being visible through the envelope - these have you covered!