Envelope-2

This origami envelope is decorative, but not just a decoration.

The fold requires paper that is rectangular, but not too oblong. A4 and A3 are good sizes.

Print PDF double sided (duplex, long-edge binding). If you print PNG you have to print the paper sheet two times. You might need to trim the edges of the practice sheet, depending on your print setup.

This fold is called a bamboo envelope. It is a traditional origami design.