Discreet, low-profile design fits seamlessly under clothing Made of 100% soft, food-grade silicone for a comfortable fit Designed to be worn inside a nursing bra to collect letdowns passively Easy-pour spout allows you to transfer collected breast milk without any spills Includes storage plug for temporary storage in the refrigerator Collects up to 1.5 oz breast milk per cup Includes one collector cup and one stopper plug