What features and qualities make a running belt ideal for carrying essentials while on the move, and are there any particular brands or models that stand out from the rest in terms of comfort, durability, and accessibility? How might a running belts design and functionality be adapted or modified to meet the specific needs of athletes or individuals with particular preferences or requirements? What role do factors such as weight capacity, material, and adjustability play in determining a running belts overall effectiveness and user satisfaction? Are there any emerging trends or innovations in running belt design that are likely to shape the future of this type of equipment?