Avery full sheet White TrueBlock Shipping Labels come in the perfect pack size for home or small business use. TrueBlock labels have a unique silver backing making them completely opaque so you can cover over information on your packaging including text, logos and torn courier labels enabling you to save money on packaging materials and still send a professional-looking parcel. Add your company logo and recipient details to the label using Avery FREE and easy-to-use Design & Print online software. The software also supports mail merge, serial numbers and QR / barcodes for all of your logistical needs. These shipping labels are compatible with laser printers and with Avery Jam-Free reliability, printer jams are a thing of the past. The label format is 199.6 x 289.1mm with 1 label per A4 sheet in a convenient pack size of 20 sheets.