Fabrics made out of natural fibers shrink. Synthetic fabrics such as polyester and nylon don’t shrink. If you have a big Jersey garment and you want to shrink it, here are the steps. Look at the care instructions of the garment. It states what materials or fibers make your Jersey garment. If it has a huge percentage of natural fiber like cotton or wool, then you can lessen its size. Say your Jersey garment has 75% cotton in it, then prepare your washing machine. Set your machine to hot wash and a medium rinse option. Do not overfill your washer tub with water. After washing, take the garment out and put it inside the tumble dryer. Set your dryer to medium to high heat. After the first cycle, check the garment if it has shrunk. Repeat the drying process until you reach your desired size.