These quarter sheet shipping labels are made from quality materials with thick backing paper. Smooth feeding to prevent paper jams. Each label measures at 4.25" x 5.5" (W x H), not trimmed, to provide you maximum printable areas. No text will be cut off between labels. It's perfect to work with major online postage applications UPS, USPS, FedEx, DHL, Endicia, and etc. Pernament white self-adhesive labels, easy peel and smudge free for laser, inkjet printers and copiers.