Ostomy Belt Fittings for one inch elastic

My mom unfortunately had to get part of her intestines removed in an operation.  So now she needs to wear what they call an "ostomy appliance" This appliance is held on by a belt with special clips on it. It also comes in only one horrible color.... tensor bandage beige. They also charge $20 for the ugly thing at the hospital.  Being the handy guy I am I designed a file and took mom to go pick out some nice elastic at a fabric store.

Print at .2 mm layers with at least 60 percent infill. Concentric fill on top and bottom look nice. These can go through the washing machine but hang to dry,  we all know how to melt plastic right?