Hey, if you're tired of licking envelopes or dealing with messy glue, these Columbian self-seal envelopes are a total game-changer! The 9x12 size is perfect for sending documents flat without any annoying folds - think contracts, photos, catalogs, or any important papers you don't want creased. They're made from sturdy 28lb white wove paper that feels professional and durable, and the security tint keeps your contents private. The self-seal feature is so convenient - just peel off the protective strip and press, no water needed. And that strip actually helps the adhesive last longer in storage without collecting dust. Each box comes with 100 envelopes, which is perfect for stocking up your office, home, or classroom. They open on the short side making them super easy to load, and they work great for organizing papers in files too. Whether you're mailing important documents or just need reliable large envelopes on hand, these Columbian envelopes deliver quality and convenience without the mess of traditional sealing methods. They're one of those office supplies that just make life easier!