240x320mm (JL4) Jiffy� Gold Bubble Envelopes Padded Mailing Bags Royal Mail Post
Size 4 - 240x320mm Small Parcel. Jiffy® has been leading the way in padded envelopes for years, and it's no surprise that their products are considered the best on the market. Jiffy® Gold Bubble Envelopes (Airkraft®).