General description Our white padded bubble lined envelopes are specifically designed for mailing number plates. With dimensions of 535mm in length and 180mm in width, these high-quality envelopes ensure a perfect fit for your number plates. The bubble wrap layer provides excellent shock protection, while the tough outer material safeguards against rips, tears, and bends. Equipped with a tamper-proof self-seal lip, these envelopes offer both security and a professional appearance.