Dietary electrolyte and trace mineral supplement for performance horses. Closely mimics the composition of equine sweat. Summer games electrolyte is a powder and can be added as a top-dressing on the daily grain ration. Summer games electrolyte was specifically formulated for and utilized at the 1996 summer olympic games in atlanta. Size is 40 Pound. Dimensions are 13 X 13 X 14.75 Salt, Potassium Chloride, Dicalcium Phosphate, Magnesium Oxide, Dextrose, Iron Proteinate, Zinc Proteinate, Copper Proteinate, Manganese Proteinate. UPC Code = 180434000040