PumpCompatible Storage These bottles are designed to work with the Elvie Pump for safe convenient milk storage Durable BPAFree Plastic Crafted from Eastman Tritan EX401 plastic for durability and to prevent discoloration Convenient Storage These bottles can be used to collect and store milk for later use ideal for shared feeding or work Easy Cleaning Dishwasher fridge and freezer safe for quick and easy cleaning after use Warranty Included Backed by a 90day limited manufacturers warranty against defects in materials or workmanship