Materials I used:- old shower curtain (thick and durable fabric). To cut it, I had to make adjustments as I completed it. It was my first outdoor pillow)
- old standard size pillow (I pushed all the filling low enough to make a square shape. resulted to 18x18 inches.)
The trickiest part was closing up the whole pillow. But thanks to my faithful sewing machine it was able to hold together. Enjoy!