Supplemental source of natural vitamin e and organic selenium for all classes of horses. Feed 1 scoop per day mixed in the grain ration of horses if current ration is inadequate in vitamin e and selenium. Size is 2 Pound. Dimensions are 5 X 5 X 6 9-Alpha Tocopherol Acetate (Natural Vitamin E), Selenium Yeast And Dextrose. UPC Code = 180434000255