More InfoCover WipesDesigned for aerospace and aviation, 303 is the World′s most effective UV screening product. It restores & maintains a like-new appearance, texture, and color to your spa acrylic. For maximum UV protection, reapply 303 Aerospace Protectant every 3 to 5 weeks of exposure. RECOMMENDED USE Using the towellete, apply 303 to the area requiring protection, most importantly any acrylic surface left exposed to the UV rays of the sun. Then with a clean non-abrasive absorbent cloth, immediately wipe the treated area COMPLETELY dry!