Specification:Material：PPHealth Tips:.wash your hands before pumping or handling breast milk. Before expressing milk with the breast pump, apply a hot towel to the breasts, massage to stimulate the areola, and make the breasts completely unblocked.Express at a pressure that works for you. Stop expressing if your breasts or nipples feel sore.For milking, you only need to express the amount of eight points (the time should not exceed 20 minutes).Use a container with a lid when storing breast milk. Remove breast milk that has been refrigerated for more than 72 hours (3 days).Do not combine refrigerated breast milk with fresh breast milk. Thaw the refrigerated breast milk or connect the container to the breast warmer to warm the milk before feeding.If the refrigerated breast milk is thawed, if the baby cannot drink it after 24 hours, please do not re-refrigerate the breast milk. Dispose of the rest and sterilize the container.