This slightly more advanced pattern than the original or the #2 from RJ Design's has two round rug size options; a 38 inch (using one 2-1/2in strip collection) or a huge, colossal, giant 54 inch finished (using two 2-1/2in strip collections).
Uses 1 Jelly Roll aka 40 2.5" strips of your favorite fabric
1-1/2 yards of cotton batting 96" wide
Denim/jeans Machine Needle Size 12/16
1,200 yards of thread - consider variegated