Reservoir design: better retain food moisture, and 't let the food get damp, add a sealing ring to the lid, tight and watertight. Rotating air vent: it can be adjusted according to the actual demand for heat preservation and air permeability (it is allowed to open the air vent before microwave heating). Extended handle design: the side is widened and the handle is lengthened, which can be easily taken after heating without worrying about hot hands. Ash prevention: prevent dust and flies from contaminating food, very clean. Simple and reusable to use. High temperature resistance: 200℃ high temperature resistance, heating invariance, splash proof, reduce the frequency of microwave cleaning. PC material: texture clear, no peculiar smell, transparent visualization, to use. Large diameter: good kitchen helper, universal for most microwave ovens. Color: transparent + green Material: PC Package Contents: 2 x Microwave Cover for Food Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.