Granny Square Blanket No. 3 Pattern

Yarn
1060 yards total of super bulky weight yarn
700 yards of main color
120 yards of 3 accent colors 

Each square uses 28 yards total: 18 yards of main color, and 10 yards of the accent color

We used 15 balls of Loopy Mango Merino No. 5

Hook
US 17 / 12 mm 

Gauge
7 stitches & 3.5 rows per four inches in double crochet before blocking

Measurements
Each square is about 6.5" x 6.5"
Full blanket is about 39" x 39"