According to the magazine (called a Jelly Basket) it requires a full size batting...however it calls for 36 (10") squares, she doesn't mention a jelly roll here...just list yardage but a Jelly roll should work, each strip makes two blocks and you would only need 18 strips for the 36 blocks...the rest you could use for your inner border or perhaps make a piano key border...than additional yardage for the outer border and the backing...hope this helps