A garment can fit perfectly in size Medium and still have serious fit problems when produced in Small, Large, or XL. That is because creating a good base pattern is only part of the sizing process. Once the sample size has been fitted and approved, that pattern needs to be carefully adjusted to create the rest of the brand’s size range. This process is known as pattern grading. Good grading keeps the original design, balance, and intended fit consistent as the garment moves t