Adjustable Ostomy Belt 43-1/3" long, latex, elastic. An ostomy belt is used to give extra support to the base plate to keep the ostomy appliance in place. A belt can be very useful if your abdomen is uneven or rounded. The Brava ostomy belt is made of soft and comfortable material, and is discrete to wear. It is skin friendly, easy to apply and are adjustable so you can fit it for your body.