Using these elastic belts is easy. Just zip up the front and adjust the belt around your waist or wherever you want to use it. Since they're elastic, they'll stretch to fit comfortably. As for care, keep them away from sharp objects that could tear the material. You can wipe them clean with a damp cloth if they get dirty. Remember, because of the chemicals in the product as per California Proposition 65, don't let them come into long - term contact with your skin or food. If you have any concerns, refer to www.P65Warnings.ca.gov.