Classed by Royal Mail as 'Packet' size. A pack of 50 x Size H (5) Jiffy Airkraft Padded Bubble Envelopes. These are equivalent to mail lite/feather-post size H - the internal measurements of each envelope are 260mm x 345mm.
50 x Jiffy Airkraft Size 5 (H) Padded Envelopes 260x345mm[5055502315928]