Rain and Sun's Firefly Top Cover is specially made to with high quality Cooltex PVC. It is tough,  strong, UV treated, long lasting and waterproof with no shrinkage.  

We have been selling Rain and Sun for years and they are, without doubt, the best quality covers that we sell. Every single component of their covers - fabric, webbing, buckles, rope and even thread - is chosen for its superior UV resistance.