Pasteurized Fresh Farm Milk - 2Litre Refill - Cow's milk is a good source of protein and calcium, as well as nutrients including vitamin B12 and iodine. It also contains magnesium, which is important for bone development and muscle function, and whey and casein, which have been found to play a role in lowering blood pressure. This product includes a reusable container. Should you prefer to use these to refill, kindly return your container every week. Please ensure your containers are washed with bleach or Milton to avoid your milk going sour.