SmithPackaging Gold A3 Bubble Padded Envelopes are sustainably made in the UK, our envelopes feature an FSC certified paper exterior and sticky peel and seal adhesive strip for ultimate security. One of the best reasons to choose bubble envelopes is their added cushioning against bumps, knocks, and rough handling. Cost-effective, hardy and providing lots of heavy padding for those special items you are popping in the post, bubble envelopes should make your essential packaging list. Flexible in use and fabulous for sending items safely and privately. Measures 300 mm length by 445 mm width. Comes in a pack of 5.