We use USPS Priority Mail to ensure the safe delivery of our product. When buying more than one bag of coffee get more bang for your buck! The small Priority Mail boxes fit either one 1/2 lb. bag or one 12 oz. bag of coffee. But up to eight 1/2 lb. bags or four 12 oz. bags + four 1/2 lb. bags can fit in to the medium size Priority Mail box. When you BUY more you SAVE more!