The filter cotton is used in the nasal suction device to filter nasal mucus and impurities, etc. It is easy to operate. Can be used with a variety of nasal suction devices. Made of good quality material, they are practical and safe for human. 100PCS filters can meet your daily need.Feature- Color: As shown.- Material: Filter cotton.- Size: 2x0.6x0.6cm/0.79x0.24x0.24inch.- The filter cotton is used in the nasal suction device to filter nasal mucus and impurities, etc.- It is easy to operate.- Can be used with a variety of nasal suction devices.- Made of good quality material, they are practical and safe for human.- 100PCS filters can meet your daily need.Warm Tip: Dear buyer, due to lighting effect, monitor&39;s brightness, manual measurement, etc., there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand Thank you