Little Martin's Breastmilk Storage Bags are pre-sterilized and ready to use, making it easy to store extra milk after each feeding. Designed with moms in mind, the bags feature a durable, leak-proof double zipper seal for safe fridge or freezer storage. Each bag includes a built-in temperature indicator for optimal feeding and an easy-pour spout that helps prevent milk loss. BPA and BPS free for safe use. Dimensions Unit weight: 0.2 lbs Unit size: 4.9 x 6.75 x 0.01 in Packaging size: 5 x 3.5 x 5.2 in Qty per pack: 60 count Warning DO NOT MICROWAVE SINGLE USE ONLY