Fiber content is generally broken down into two categories: natural fibers and synthetic fibers. The most popular natural fibers for making blankets are cotton yarn and wool yarn. Wool yarn has better insulating properties than cotton yarn does, but cotton yarn is generally easier to care for.
A lot of knitters and crocheters love to use thicker yarns to make a chunky blanket. That isn’t always the best call, though. For example, when I knit baby blankets, I tend to use a finer yarn. Bulky weight yarn can result in a knit blanket that is rather stiff. It can also have gaps in the stitches that are too easy for little fingers to get into.
if you plan carefully, you can make these little bumps part of your design, like I did with the bottom of my Emily’s Garden Tea Cozy (pictured in this post).
Bulkier yarns Knit Picks Wool of the Andes Bulky Lion Brand Wool-Ease Thick and Quick Loops and Threads Charisma
Thinner yarns Patons Classic Wool Caron One Pound Lion Brand 24/7 Cotton