This is a cute Winnie the Pooh design microwave steam sterilizer case. Simply add water and heat in the microwave for 3 minutes to easily sterilize baby bottles and mugs. 【Recommended Points】 * Completed in just 3 minutes: Just add water to the container and heat in the microwave. No need to boil hot water, allowing for quick sterilization in the midst of busy childcare. * Mug type also OK: Using the included holder improves steam circulation and water drainage for baby bottles. Removing the holder allows for sterilization of mug-type baby bottles and straw mugs, making it useful for a long time. * Compact design: The size doesn't take up much space in the kitchen, and is convenient for storage and carrying when visiting relatives. 【Usable Sizes/Materials】 * Baby bottles up to 178mm in height (glass or plastic) * Plastic materials (PP, PPSU) * Cannot be used with metal products or plastic products with a heat resistance of less than 100 degrees Celsius. 【Product Specifications】 * Set Contents: Container, lid, rack, holder * Size (Capacity): 550ml * Raw Resin: Polypropylene * Heat Resistance: 140 degrees Celsius / Cold Resistance: -30 degrees Celsius * Compatible Microwave: Usable in most household microwaves - Condition: Minor burn marks present