Sentry Solutions - Marine Tuf-Cloth (12" x 12"/144 sq. in.): Model SY-1020. A special formula with additional ingredients to enhance protection against highly corrosive saltwater and high humidity. Use Marine Tuf-Cloth when your gear is faced with extreme conditions or for long term storage. Tuf-Cloths are made of a soft lint free fabric that is very durable. They come in re-sealable zip-lock vapor barrier storage pouches to assure long life. Made in USA.