Returning to work while breastfeeding is a big transition, but many parents find that a high-quality cooler bag is the most effective way to keep pumped milk at a safe temperature until you get home. For office storage, consider using a small, discreet pouch inside the office refrigerator to hold your bottles comfortably. You can also optimize your pumping schedule by nursing right before leaving for work and again shortly after arriving home to maintain your supply and minimize the amount of milk that needs to be stored during the day.