The Elvie Pump Breast Milk Storage Bottles are a set of three BPA-free storage bottles for breast milk, each with a capacity of 150 ml, and come with three secure lids. Specifically designed for compatibility with Elvie breast pumps, they feature a standardized connection system for leak-proof transfer of expressed milk directly from the pump to the storage container. Made from durable, food-safe materials that can withstand repeated sterilization cycles, including steam, boiling, and dishwasher cleaning, the bottles maintain milk quality with freezer safety down to -20 °C and microwave suitability for gentle warming. The transparent design allows for easy volume control with clear metric markings at 30, 60, 90, 120, and 150 ml, while the wide opening facilitates convenient filling and cleaning. Each bottle measures approximately 8.5 cm in diameter and 12 cm in height, and the total set weighs about 180 g. The screw caps feature a silicone sealing ring for an airtight closure to preserve freshness and prevent leaks during transport. The stackable bottles support organized milk management with their writable surface for date and time entries. The product meets European safety standards for baby food products and is suitable from birth. The minimalist design with rounded edges ensures comfortable handling, and the material composition is free from phthalates and other harmful chemicals. This storage solution seamlessly integrates into breastfeeding routines by minimizing transfer processes between pumping and storage, reducing contamination risks and preserving nutrient quality. The bottles are compatible with most standard bottle warmers and are suitable for both short-term refrigerator storage and long-term freezer storage of breast milk.