Avery Shipping Labels with TrueBlock Technology, 2"x4", White, 500 per Pack (AVE8363) Pack of 500TrueBlock Technology completely covers everything underneath, so you can reuse mailing tubes, boxes and more. Jam and smudge free guaranteed! Smooth feed sheet edges prevent adhesive build up that causes jams. Quick drying sheets prevent smudging. Adhesive: Permanent Self Adhesive Case Pack: Pack of 500 Compliance Standards: Includes Box Tops for Education coupon Label Color(s): White Label Size text: 2 x 4 Label Special Features: Inkjet Printer