Building Blocks Baby Blanket by Plymouth Yarns. I did not use the yarn called for in the pattern, so my blanket is significantly smaller than it could be. Car seat or stroller sized. I used a soft aran acrylic by Cascade Yarns- one of my favorite yarn companies! If I ever make this blanket again, which I probably won't, I would double the yarn and use a bulkier weight. I have the Encore 8 Hour Baby Blanket booklet. I like the book, the patterns are easy and I'm likely to knit most of them.