Using these belts is super easy. Just wrap them around your waist and fasten the metal buckle. They're stretchy, so they'll fit comfortably. When it comes to maintenance, keep them away from water as the straw material might get damaged. Also, avoid sharp objects that could tear the belt. Since this product has chemicals that might be harmful, handle it with care. Don't let kids play with it without supervision. If you have any concerns about the chemicals, check the information on www.P65Warnings.ca.gov.