You must replace your Polycore Bands every year of use, regardless of their outward appearance.
We designed the Polycore bands with two cores: The outside core is black and the internal core is yellow. If cracks form on the outside black core, check to see if the inner core is exposed. If you can see the inner core, it is time to replace.
Note: Early version bands have a red internal core.
You can purchase replacement Polycore Band sets here.
Product link: https://www.ready-rig.com/collections/replacement-components/products/vega-polycore-band-pair