Precocious Purls eBook is a collection of 4 patterns using knit and purl stitches to create 6 precociously reversible hats. The hats work well in wool or cotton blends. The patterns have written directions for sizes adult, child, and infant, with charts included for the Rhombi Hats. The Precocious Purls eBook is priced at $10, or the patterns may be purchased separately at the listed prices.