Woobles Easy Peasy Yarn for Beginners with Easy-to-See Stitches - Crochet & Knitting Yarn - Worsted Medium #4 - Cotton-Nylon Blend

I haven't tried it, but Bernat Maker is supposed to be similar, and Loops & Threads Cuddle Craft Tube is also similar. Last time i looked, Hobby Lobby also has their own! If you want the official yarn, they sell it on Amazon! Amazon: Easy Peasy YarnHobby Lobby: Yarn Bee Beginner YarnMichaels: Cuddle Craft TubeYarnspirations: Bernat Maker