From the book: "The flat bottom of this sturdy tote is reinforced with a second layer of felt.... This tote is great for carrying your current knitting project." Kit includes Yarn. You can purchase with or without the pattern book - if you already own a copy of the book, then you don't need to buy it again! Pattern Book is 'Felted Knits' by Beverly Galeskas Needles needed, but not included: US 10.5 24" Circ and DPN for Midsized Bag. US 11 24" Circ and DPN for Large Bag.