Feature:1. Important for Calf: Colostrum is the milk secreted by cows within 72 hours after calve. For calves, high nutritional value.2. Rich in Nutrients: The colostrum contains precious active immunoglobulin (LG6, lgA, IgM, IgE, IgD) and rich nutritional ingredients such as milk calcium, protein and a variety of trace elements3. Practical and Convenient: Colostrum bag can effectively collect and store bovine colostrum. Screw interface, easy to use, handlift design, easy to carry.4. Widely Used: The calf colostrum packaging bag is suitable for calf colostrum bag, sheep's milk bag, perfect for pasture.5. Premium Material: Made of high quality plastic material, safe and non toxic, no harm to the health of young animals, very environmental protection.Specification:Item Type: Colostrum BagMaterial: PlasticUse: Colostrum Collection BagSize: Approx. 39.5x32.8cm / 15.6x12.9in .Package List:10 xColostrum BagNote:Manual measurement, please allow some error.Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.