100% all-natural salt straight from the Himalayan Mountains! Inspected rigorously for purity and quality, our rock salt provides animals necessary trace minerals and elements to maintain their overall health, including iron, potassium, and magnesium. Designed "hard as a rock", our salt is difficult for animals to break off pieces, making it last longer than other styles. Suitable for both indoor or outdoor use. Complete with rope to hang. Color may vary from photo depending on mineral content. Always be sure fresh drinking water is available for your animal(s) at all times. Not for human consumption. 4.5 lbs. other dimensions may vary.