Once again I used Jenya’s tutorial for this.
I added some ease but probably didn’t need to as this turned out a bit roomier than I had planned. I was using a slightly thicker 80/20 cotton/polyester batting and larger seams of 1 cm, so wanted to be sure it didn’t turn out too small. However, Jenya’s formula for plugging in your own dimensions is excellent so I didn’t really need to add ease.
This was quilted in straight lines using the walking foot on my Pfaff sewing machine; about 20 cm apart. I quilted the front and back pieces and the flap, and used an 11-inch strip of Velcro to close it. I also added some heavy sew-in interfacing to those three pieces as well since this 15-inch laptop is heavier than a smaller device.
I have a backpack with a section for carrying a laptop, and it has a bit of foam in it but I wanted a quilted case for extra padding and security.
This has got to be the most useful tutorial and customizable pattern I have ever used.