DOUBLE BOTTLE COOLER: For travel, daycare, or life on the go, this bag holds two standard 8-9oz bottles or up to four 4-5oz newborn bottles to keep milk fresh and ready LEAK-PROOF LINING: If a bottle leaks, don't worry - the TwoCOOL Double Bottle Cooler features a leak-proof lining that pulls up for easy cleaning to prevent odors. Wash with warm water and mild soap COMPACT AND FULLY INSULATED: This breast milk cooler bag is fully insulated and keeps bottles cooled or warmed. Its narrow size conveniently fits in diaper bags, backpacks, purses, or travel bags INCLUDES REUSABLE ICE PACK: Comes with an 8oz reusable ice pack that keeps bottles, snacks, and drinks cold for hours, ensuring freshness wherever you go QUALITY YOU CAN TRUST: Made by J.L. Childress, the original inventor of the breast milk cooler bag in 1985. Built with premium materials and strong zippers to withstand daily use