The longevity of the Quiknote Outer Case entirely depends on one's usage. If it is kept away from direct heat and moisture or any such damaging sources/surfaces, the leatherette cover should last for a long time. And about the holding bands, currently, we do not sell them separately.
Thank you for the review. It's our customer's feedback that helps us improve and we are glad to inform you that we are coming soon with our new Quikrite versions. Stay tuned for all the latest updates.