Expandable to 70mm. If your products are small enough and you don't quite need a box, try these printed envelopes out instead! You will recognise the famous online retailer's logo printed on each envelope. So, if you sell your products via that platform, even better for you! They have a self sealing, pre-glues strip for easy closure and are great value for money. We only have a limited supply of these available, so if you can add these to your packing inventory, then be quick!