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You'll need a US size N/P 10mm crochet hook and 1 6-ounce (170 g) skein of yarn in the color of your choice. The yarn should be 106 yards (97 m) long. You'll also need a large-eye tapestry needle for weaving in the yarn tails. The yarn should be soft and super bulky weight. You can use 1 color or switch colors for a multicolored hat.
Get out your yarn and crochet hook.