Any yarn may be used with an appropriately sized hook.

• Makes an 8 inch square in worsted weight yarn and 5 mm hook.
• Makes a 5.5 inch square when worked in size 3 crochet thread held double (equivalent to DK weight) and 3.25 mm hook.
• Makes a 4 inch square when worked in size 3 crochet thread and 2.75 mm hook.

3 color square shown in Colored Bird and Le Paon Cotton 3# 2mm (Amazon)
Color A: Yellow
Color B: White
Color C: Bright Green

4 color square shown in The Pioneer Woman Crochet Thread Size 3 (Walmart) held double
Color A: Yellow
Color B: Coral
Color C: Jadette
Color D: Teal

1 color square shown in Mary Maxim One Pound Crochet Cotton (100% mercerized cotton, 16 oz/453 g, 1200 yds/1097.28 m)

This square is used as a component in my Ponytail Sunhat and other designs.