Little unicorn: 2.5 mm hookBig unicorn: 4.0 mm hook The big unicorn is made exactly the same as the little one, but with double thread Phil Coton 3 or Yarn and Colors Must-Haveor any other yarn with the same thickness Abbreviations:hdc: half double crochetch: chaindecr: decrease (invisible, unless stated otherwise)mr: magic ringst: stitch