It is used by wearing it over the bladder diaper used at night. It prevents the urine leaking from the bladder diaper throughout the night from passing onto the patient's clothes and bed. It is washable. You can wash and use it many times at low temperatures. Tear-proof sealing tests have been carried out. Made from breathable 100% COTTON fabric. The waist and leg parts of our product are elastic... There will be no leakage from our well-fitting products. It has been specially designed for your comfort. It should be used with diaper and underpants. Otherwise it will leak. Size chart: XS: 55 - 65 KG S: 65 - 75 KG M: 75 - 85 KG L: 85 - 95 KG It is for our patients. You can have a special size tailored by asking questions and specifying your weight. Our products are produced for you in our own workshop after being tested many times.