This pattern was published by Lion Brand Yarns and is available as a free download:

 

 

Timeless geometry, endless colorway possibilities!

The Specs
Craft: Crochet
Sizes: One Size
Measurements: 39 x 50" (99 x 127 cm)
Gauge:
Square 1 = 5½ x 5½" (14 x 14 cm)
Yarn Requirements: 680 yds (624 m) of worsted or bulky worsted weight yarn in each colors A and B and 340 yds (312 m) in C
Hook sizes used: J-10 (6mm)