Iris envelope

The Iris envelope is an origami envelope that has a pull-tab for easy opening. Any rectangular paper format can be used.

The fold in step 11 reverses the fold lines in the bottom right corner, so that it fits into the pocket above it.

The fold in step 12 is not strictly necessary, but it forms the pull-tab and is also aesthetic.

The Iris envelope makes efficient use of the paper. If the paper you have is not that large, this fold is worth considering.

This practice sheet has helpful preprinted folding lines. You might find it easier to follow than the instructions above.

Print PDF double sided (duplex, long-edge binding). If you print PNG you have to print the same paper sheet two times. Print results can vary between different print setups. Printing is like that. If you have problems with edges of the print not aligning with the edges of the paper, try to print a reduced size (like 60%), and trim the paper afterwards.

The Iris envelope is an original Spredehagl design. It is a variation over a traditional origami design.