Full-sheet labels feature Cover-Up technology that completely blocks any writing underneath, so you can easily reuse boxes, envelopes and more and your mail ships out the door looking neat and professional. Full-sheet size makes it easy to print large or custom-sized labels. Use your laser printer to create professional-looking labels. Jam-free, smudge-free labels work with popular shipping software tools. Strong, permanent adhesive sticks securely so labels stay put.