The green clean travel safe cleaning kit includes blue booster vario brush optic fluid 30ml silky wipe 25x25cm and cotton swabs the blue booster removes dust particles from all surfaces such as lenses the retractable vario brush is great for sweeping away any unwanted dust particles and is made of soft goat hair and adjustable in two positions position one is 19mm in length firm and position two is 34mm in length soft the bottle of 30ml optic fluid is for excellent and effective