Avery waterproof paper labels are resistant to water, prolonged UV exposure, abrasion and chemicals/solvents, meaning that they stay intact without smudging the address. These shipping labels are suitable for laser printing and are ideal for use on any packaging materials including polythene or Tyvek envelopes. The special waterproof paper material and adhesive will resist 90 days immersion in sea water and temperature variations (-30 to 100 degrees Celsius) to give a waterproof paper label that remains easy to read. The free Avery Design & Print software offers personalisation, logos and business branding plus free templates including 'fragile' and 'this way up' to help keep parcels safe on their journey. Each white label measures 199 x 143mm and this pack contains 25 A4 sheets, with 2 labels per sheet (50 labels in total).