Gudrun Erla's Katie Quilt Pattern features a fast and fun disappearing block technique that uses Creative Grids Stripology XL Ruler or Stripology Squared Rulers (not included). You can use 10" fabric squares or fat quarters to recreate this quilt. The Katie comes with 6 different size options: crib (40"x48"), lap (48x56"), twin (64"x88"), full (80"x88"), queen (96"x96"), king (104"x104"). Detailed instructions are included as well as instructions for using regular rulers.