1 and reusable, environmentally friendly. 2 and , filter filth and hazardous particles. 3. 2 layers: waterproof and breathable filter layer and composite layer. 4 reminder, utilization display and replacement reminder, real-time monitoring, convenient and efficient. 5 debris of dust from getting into the motor room, forestall secondary pollution, guaranteeing the service life of the vacuum cleaner. Compatible model:MJXCQ01DY Colour:white Material:plastic Package Contents: 2 x Vacuum cleaner filter out Only the above kit content, varied item aren't included. Note: Light and diverse exhibits could cause the color of the object in the photograph somewhat different from the genuine thing. The dimension allowed error is +/- 1-3cm.