Reusable multi-purpose container for breast milk and food storage

A breast milk storage and feeding system comprising:

• a flexible container having a base configured for stably supporting the flexible container onto a support surface and an upper portion defining a substantially circular mouth when the flexible container is in an open configuration, wherein the upper portion is resiliently deformable into a storage configuration in which opposing sides of the upper portion are in contact with one another thereby sealing the mouth of the flexible container, and wherein the upper portion comprises a first coupling interface proximate the mouth of the flexible container for removably connecting a collar thereto when the flexible container is in the open configuration, and a second coupling interface below the first coupling interface for removably connecting a clamp thereto when the flexible container is in the storage configuration;
• a collar made from a substantially rigid material and configured to be removably coupled to the first coupling interface, the collar comprising a third coupling interface on an outward facing surface thereof, the third coupling interface configured for mechanically coupling the flexible container, via the collar, to a breast pump or a feeding accessory;
• and
• the clamp configured to removably slidably engage the second coupling interface for sealing the opening of the flexible container when in the storage configuration;
• wherein,
• the upper portion tapers toward the mouth of the container,
• the upper portion defines a pair of creases at radially opposite locations,
• the second coupling interface comprises a pair of grooves, each extending along a respective one of the opposing sides of the upper portion, between the pair of creases, and
• the collar comprises a pair of cutouts that align with the pair of grooves.