This bag is everywhere. I had to try one for myself! The original is tiny (but adorable!) so I enlarged it and added some extra size and length to the strap. The fabric is a very popular one by Henry Alexander. I actually found it at JoAnn Fabrics! It was sort of a miracle since most of their fabrics are so crappy!
I should have added the magnetic snap like the pattern called for but Cal had used it for his "tool" collection and I couldn't find it anywhere! I used flannel for the interior lining and a thrifted denim for the exterior lining (if that makes any sense!)