AKAR A4/C4-234x334mm -[ Pack of 200] Strong Rigid Cardboard Envelopes/Cardboard C4 Envelope, Heavy Duty 400gsm,Corrugated Capacity Book Mailers,Peel & Seal, Rip & Strip Open Capacity A4 Book Mailler

I've ordered these a few times to post my small watercolour paintings in, and they're perfect (although I would recommend putting a backing board in if using for unmounted prints etc).

I'm using them to post my artwork. They're much sturdier than any I found in the post office or rymans and the adhesive strip holds really well.

Can't fault the quality, thickness and stickiness. They do the job perfectly but are a little pricey compared to others

Perfect envelopes for calendars. The size was perfect for the ones I made. Very good sticky seal with them so you don't need to worry about them being opened in transit. Great value for money.

Great size and the amount you get for the price is a very good deal.My only issue it that the tab in which the buyer would peel off to open it is very fragile and every time I put something inside one it tears off, therefore I have to seal it tape. (I'm probably just putting too much in them though)

Not bad for the price, however I had to tape along the edges as it tear along the top. The adhesive isn’t very good either, but overall it works well for what I need it for (posting notepads).

Good value and quality envelopes that help to post larger 'soft' items as royal mail large letters and not small parcels.A bit costly as a business solution, but hopefully customers will recycle them.Only slight down side is that they don't always stick very well, but as said I was effectively over packing them so not fully there fault.

These are great for posting things, not just letters