My pocket square kept slipping down into my pocket, and they need to be folded just so to sit at the perfect height out of your pocket for the right look. 
Enter the solution…. 

This is a printable stiffener that you fold your handkerchief / tissue / scrap of bed sheet 
around and it will hold it in the perfect square shape and hold it at the correct height to show just the right amount poking out of your pocket. 

Design features 

• This is 85x177mm the perfect dimensions for my suit, yours may vary but its a good starting point. 
• the bottom is tapered so that it doesn't jam at the bottom corners of a pocket, it also means that it naturally sits as a slight angle in the pocket (just as it should). 
• This is only 0.6mm thick so nice and flexible, the holes make it more so as well as making sure it's open an breathable, it doesn't feel like a plastic sheet is in your pocket. 
• You can attach your pocket square in place, (nobody ever takes it out of their pocket after all) tape / double sided tape works well or the smallest holes are designed to be easy to put a stitch through.  
• There is also a version with a 10deg, slant at the top if you want it a little extra jaunty. 
   

Print Settings 
nothing fancy just a hot level bed, No brims. 

If your wondering why my print looks so awful, i had a filament snag. 
But the model works all the same so I'm not reprinting.