I ordered the AmazonBasics Catalog Mailing Envelopes, Peel & Seal, 9×12 Inch, White, 100-Pack – AMZP15 from the mailing supplies category after running through my initial stock faster than expected. At $12.99 for a hundred envelopes, I figured it was worth testing out since I handle a fair amount of business correspondence and product shipments from my entrepreneurial ventures here in Houston. The spec sheet looked solid. 9 by 12 inches hits the sweet spot for most documents without needing to fold them down, and the peel and seal feature promised convenience over the lick-and-seal nonsense. I needed something reliable and straightforward. AmazonBasics delivered on both fronts.