Paperwork sleeve

[Silenceofthebams]

Does anyone know where I can get , or even what the right name is for what I will describe as a stationery sleeve.
It’s a4 sized and sealed round two sides. Almost like a poly pocket and a bit thicker.
Thanks

Is it like an envelope with a popper?

here

document wallet

like this

Like this?
www.paperchase.com/en_gb/stationery/filing-storage/documents-wallets/making-waves-plain-slip-in-wallets-set-of-8.html

Super useful for work! They seem to be called different things different places though. I've bought pretty ones in Paperchase and functional clear ones in WH Smith.

www.ebay.co.uk/itm/100-x-CLEAR-PLASTIC-A4-CUT-FLUSH-FOLDERS-WALLETS-OPEN-TOP-SIDE-NP-WX24002-/130737825133 this?

Thanks everybody.
There’s no poppers or anything. The closest thing here is the slip in wallet only the one I’m looking for looks a bit thinner with nothing on the front

They're called cut flush folders

Fantastic @bookgirl1982, that’s exactly what I’m looking for. That’s me ordered some.
Thanks again