The Great Premium Pool Salt is dry, refined sea salt (Sodium chloride) made specifically for swimming pools. This high-quality, fine grade pool salt is kiln dried twice and is of a fine crystal texture, and transparent to white opaque in colour

Disclaimer: This is Pool Salt mineral which finer than regular pool salt and will disolve quicker. It also needs to be used in a different way than regular pool salt. Seek advise if you are not sure how to use pool salt mineral before use.