Surely everyone should have a utility belt, Batman had one.
From Palm Equipment:
A technical waist belt to mount any Palm throwline. With a throwline release and belt release buckles, a pocket for storage and a comfortable vent mesh belt that floats.
Embossed foam waist belt with Fixlock® QR buckle
Throwline deployment system with Fixlock® QR buckle
Cordura® top-opening towline pouch with removable 3m HT polypropylene floating line in yellow
Shock absorber on rope
Comes in storage bag with printed usage instructions
Fabrics: Embossed foam belt, Cordura® 550D bag with 6mm floating Polypropylene line