303 Aerospace Protectant is the most powerful UV screening protection ever made. Use it on everything from boats to apparel. Originally developed for aerospace and aviation applications, 303 repels harmful ultraviolet radiation and is really helpful in prolonging the lifetime of your raft. Don't forget to use this on the latex gaskets in your paddling apparel. Does not contain any harmful silicone oils, which can dry out and damage surfaces. Safe and effective for use on synthetic and natural rubbers, PVC, gel coat, fiberglass, carbon fiber, plastics, finished leather and UV sensitive plastics. 303 is a premium surface treatment that provides superior protection against harmful UV rays that can cause loss of mechanical properties such as: discoloration, fading, embrittlement, cracking andor chalking. Treated surfaces repel dirt, soiling, staining, water spots, salt water and mildew. Easy to use just spray on and wipe dry! This is an environmentally safe water based product that contains no petroleum distillates, alcohol, mineral oil or harmful silicone oils. It's non toxic and biodegradable.