Double Trouble CAL was launched by Jolanda Verschiere-den Toonder & Naomi Harreman in January 2017. Since then, although the pattern is relatively new, it became wide-spread among crocheters. I am not surprised, because it is one of the most wonderful blankets I have ever seen! It is hard to resist and lends itself to just about any decor. Link to the free pattern is below.
Double Trouble Cal Blanket – Free Crochet Pattern is >>here<<.