Unlimited stacking to solve storage problems: stack layer by layer for orderly organization. Largecapacity extra layer can accommodate 40 sizes of dumpling, enabling flexible use. Builtin timer on the lid: time dumplings and track ingredient freshness, so you know the expiration date at a glance. Sealed buckles on both sides provide secure closure and versatile storage for other foods, such as steamed buns, in addition to dumplings. Key attributes Function: stackable storage system with a timer and side buckles for secure closure. Compatibility: designed for kitchen use with dumplings and other small steamed foods like buns. Size and capacity: extra layer offers large capacity to accommodate 40 sizes of dumpling; stackable design optimizes space. Material and construction: built for repeated use and easy handling (material not specified in original description). Performance: reliable sealing with side buckles; timer on lid aids timing and freshness awareness. Use scenarios Dumpling meal prep and storage: cook dumplings, then stack the components to save space in the fridge or cabinet; use the extra layer for additional dumplings as needed. Inkitchen cooking and timing: while preparing dumplings, set the lid timer to manage cooking time and monitor ingredient freshness. Multiitem storage: store steamed buns or other small foods in the same system, using the sealed buckles to keep contents secure and organized.