· Create professional-looking labels quickly. · Ultrahold™ Adhesive sticks to more tough surfaces, ensuring your label doesn't fall off your package. · Bright white labels with TrueBlock® Technology are guaranteed to completely cover everything underneath so you can re-use mailing tubes, boxes and more! · Half-sheet size is ideal for use with popular internet shipping software and services such as UPS®, FedEx®, and USPS® Click-N-Ship® and Shipping Assistant®.