Ray Bloc is an advanced UV protection treatment scientifically formulated to provide unsurpassed UV protection for all fabrics.

When using The Net Return outdoors with extended direct sunlight exposure, we recommend the use of Ray Bloc to prevent sleeve fade and fabric degradation. Ray Bloc is easy to apply, has no odor, no yellowing and is non-stiffening once dry. It is enhanced with Aqua Armor waterproof treatment.