Embodiments of the systems and methods described herein include a system of improved silicone bottle containers, adapters, and nipples that support the collection, storage, and feeding of breast milk. In some embodiments, a bottle system may include a bottle formed from molded silicone rubber including a bottom end having a recess, and a top end having an opening configured to receive and dispel contents, wherein the top end is spaced apart from the bottom end, and an inner adapter composed of molded standard thermo-plastic configured to engage with the top end of the bottle. The bottle system may also include a flat cap, nipple, nipple cover, nipple adapter, and/or breast pump adapter.
