Abstract: A grocery storage system includes two or more bags having retractable members whose faces comprise connecting means such as Velcro material allowing the bags to connect to one another. The bags can be placed inside a shopping trolley in an accordion fashion facilitating separation of different grocery items and convenience of portability. The retractable members facilitate use of the storage system in shopping trolleys of different sizes. The bags include different type pockets which can be used for different items, such as bottles, fragile items such as eggs, and personal items such as the shopper's wallet or smartphone. Grips which may include Velcro patch coupled with two distal bags are used to secure the storage system within the shopping trolley. Bags can be made from fabric having lower sections made from fish-net or transparent material. One of the bags maybe, selectively, made from heat-insulating material facilitating control of temperature of grocery items.