1. Brand new, high-quality materials, -made, durable, and highly matched with the original equipment. 2. Clean accessories keep your home robot at . Accessory contents are easily removed and replaced as part of routine maintenance. Also reduces the infiltration of dust, pollen and other allergens into the air you . 3. In order to achieve the best cleaning and filtering effect, cleaning accessories should be replaced 2-3 months according to the frequency of use. 4.Efficient Filtration, The filter replacement for hv301 can cut off 99% of these contaminants and impurities it damages your motor and prevent being released directly back into the air flow. 5.Say goodbye to odors, the -filter can help reduce unpleasant odors from pets, smoke, cooking fumes, and a of household and chemicals. Material: sponge colour: as shown Package Contents: 5 groups x filter cotton set Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.