Using your della Q Tri - Fold Circular Needle Case is easy. First, open the case by unfastening the elastic and button closure. Then, sort your knitting needles by size and place them in the labeled pockets according to their US size. Any extra needles can go into the unlabeled pockets. Notions like stitch markers or small tools can be stored in the zip pockets. When you're done using the case, simply close it with the elastic and button. As for maintenance, keep it in a dry place to prevent the linen fabric from getting damp. If it gets dirty, gently wipe it with a soft, dry cloth. Don't wash it in water as it may damage the fabric and the closures.