Avery WeatherProof Mailing Labels With TrueBlock Technology, 95520, 1" x 2 5/8", White, Pack Of 15,000 - Choose the most secure labels that won't peel or curl with Avery address labels using Ultrahold permanent adhesive. Avery Ultrahold adhesive sticks and stays, unlike basic labels, and applies securely to a wide range of surfaces including envelopes, cardboard, paper, plastic, glass, tin and metal. Avery labels feature proprietary Sure Feed label technology that helps deliver a more reliable printer feed in order to avoid print misalignments and paper jams.