Resine Flexible 80A

We would like to use 80A Flexible Resin. But we would like to have informations on the aging of materials. We use this resin for a small object with this dimensions : 23x23x5 mm. The object would face the sun and rain and this object have to keep its proprities.

How does this material age over time ? Would there be yellowing, cracks, or even loss of elasticity ? In short, what are the guarantees of the materials over time?

Thanks for your feedback !