Triplast 250 x A5 C5 Manilla Hard Board Back Envelopes (229x162mm) - Cardboard Backed Envelopes with Peel & Seal Strip - Rigid Do Not Bend Envelopes for Mailing Posting Shipping & Storing Documents

I needed these for sending photos and non-bendable pieces in the post. The pack of envelopes arrived in a good state with no bending or dents. The envelopes themselves are high enough quality that I would expect to receive one of these from an Etsy seller or similar - so suitable for commercial use.The price was great and now I have plenty to hand at home!

These are great for sending photos, or things you don’t want to bend in transit. I ordered A5 because they’re sufficient for what I want. There are a range of sizes, so you choose!Buy with confidence.5 stars

used for sending artwork and none have arrived damaged so far, so must be pretty good!

A great multi pack of hard backed envelopes - I use these for sending art prints as it helps to keep them flat and protected. I did get about 5 or 8 that had been bent over in the corner when they arrived though so I couldn't use all of them. Not bad though!

These envelopes are my favourite. Anything flat enough to fit in these end up being secure, as long as your postman doesn't ignore the 'do not bend' stamp that is.

These are great. Exactly as advertised & perfect for the intended purpose. Arrived quickly and in a sturdy box. Will definitely buy again when I run out & if I need any more.

This type of envelope is very useful to send fragile papers, stickers, greeting cards and more. It ensures that the contents are not bent on the way to its recipient. The envelopes are a great size, not too big or too small. Even if you have small items in the envelope the space between it all allows the contents to be secure.It is also a grate size to post large letter. As it is made to fit within the postal box

Very thin and flimsy. Item can easily be bent so wont really protect what you are posting! Would not recommend!