The front and back are formed by mitered squares in garter stitch, and the sides and bottom are striped garter stitch. Because of the geometric shape, the bag should be stabilized inside with plastic mesh on the sides and bottom, and then lined with fabric.
Felting is not an exact science. Your final dimensions may vary slightly.
Finished Felted Dimensions: 7" by 7.5" by 3.75"
Yarn: Cascade wool, using 2 skeins of Quattro green tweed (color 9434) and 1 skein of Cascade 220 aqua (color 9452)