From the manufacturer:
The Leanne Laptop and Tablet Sleeve has been designed by Leanne McGiveron. This pattern has been designed for protecting your laptop or tablet. It’s simple construction makes it a great beginner-friendly pattern. The magnetic snap flap closure will keep your laptop secure, but can also be used as a mouse pad when the sleeve is open.
From start to finish, this sewing pattern takes approximately 60 minutes complete.
FINISHED SIZE: The tablet sleeve is 10" wide x 7" high, the laptop sleeve is 13" wide x 10" high, and the XL laptop sleeve is 17" wide x 13" high.