This toe bag is large enough to carry your 18" x 24" cutting mat, plus all of your quilting supplies. There are very large pockets on both sides of the lining, where you can store your quilting squares and rulers. Even your 15" square! This tote bag features small handles as well as a long, over the shoulder strap to keep your hands free. This pattern is made using a Bali \pop, or 40 - 2 1/2" strips, plus lining. This tote measures 27" wide x 19" high, and 3 1/2" deep. All of my patterns come with easy instructions with lots of colour illustrations. This is a pattern, not a finished bag.