I think this is a lack of sleep preventing me from understanding but... can you take refrigerated never frozen pumped milk and keep it in a cooler bag and for how long? I saw you can use the bag for 24 hrs with freshly pumped milk but what about refrigerated??

(like if on the go and don't have freshly pumped available or if I were away and my husband wanted a cooler bag upstairs with two bottles ready to be warmed and fed overnight?)