I have a set of Inertia Design panniers which I bought over 20 years ago. It's a simple design: 2 top clips which hang off the carrier rack and a bottom clip which uses elastic straps to hold it in tension against the bottom off the rack.
The panniers are still in usable shape except that the elastic straps which hold the bottom clip are all stretched out and I've had a pannier fall off when riding over rough terrain. Bungee cords help but then make attaching and detaching the panniers cumbersome.
Are there any sort of purpose-made replacements for these straps out there? I've searched the company website and the web in general but found nothing.
I will probably try cutting up bungee cords if I can find ones which fit the upper plastic attachment points but I thought I would ask here before going all "DIY"
UPDATE: Here's a photo of the panniers. 20+ years old – they could do with a good wash but aside from the elastic strap problem, they are still in decent shape. Plastic tube connectors hold the elastic strap in place. I haven't yet been able to find bungee cord thin enough to fit through the plastic connectors.