Blake Purely Packaging C4+ 324 x 230 mm Metallic Padded Bubble Envelopes (412379-7) Assorted Colours - Pack of 6

Functional - I wasn’t sure about the seal so used duct tape on top just because there’s been a lot of rainy weather lately and I was using it to send a book. Otherwise fit for purpose.

Bigger than expected but that's my fault for not checking the size. Arrived quickly & as advertised. Very happy with them

Excellent value and good quality.