The Evenflo insulated cooler bag accessory kit is a must-have accessory if you are a pumping mom. The insulated cooler bag is perfect for keeping your breast milk cold and stores up to six Evenflo milk Collection bottles and three Evenflo ice packs. This kit includes two breast milk Collection bottles that store up to 5 fluid ounces and are compatible with all Evenflo breast pumps as well as most other standard neck breast pump brands. In addition the kit includes three ice packs to use in your cooler bag helping you keep your Pumped breast milk cool and fresh until you get home to baby.