Micron Extra SPC (Self Polishing Copolymer) antifouling delivers unrivalled, multi-season protection against harsh fouling conditions on boats of all size, and in all waters - Fresh to Salt Water. This state of the art SPC technology provides constant protection against fouling at the dock or underway, so you can enjoy your time on the water and know you boat is constantly being protected with Micron Extra SPC. Self Polishing Copolymer (SPC) technology is polishing away in a controlled manner, whether the boat is moving or notMulti-seasonal protection for all areas coast to coast on boats of all sizes