Ventilation optimized for microwave steaming. The steamer features densely patterned vent holes to ensure efficient steam release during microwave heating. Ideal for cooking vegetables, dumplings, and more in the dorm, office, or home. This set includes 1/2/3 steamer, 1 lid, and 1 tray. Reinforced rack for stackable heating. The stackable design lets you heat different ingredients at the same time, saving space and increasing cooking efficiency. Built with materials that withstand 20 C to 120 C (4 F to 248 F), it is cold and heat resistant, microwavesafe, resists deformation, and is easy to clean. Secure lid design. The tightfitting lid doubles as a dumpling steamer, prevents spills, locks in moisture, and ensures evenly cooked food. Durable and safe material. Made from foodgrade material, this egg cooker microwave alternative is heatresistant, safe, and built for longlasting daily use. 23 use scenarios In a dorm, office, or home, use this steamer to quickly prepare vegetables, dumplings, and other small items in a microwave. Use the stackable rack to heat multiple ingredients at once, enabling efficient meal prep and better use of microwave space. Use the tightfitting lid to prevent spills and retain moisture for evenly cooked results when steaming dumplings or vegetables.