Using 'wet' lubrication for your drivetrain in dusty, dry conditions results in caked, gummed up chains and gears. Finish Line's Dry Lube was formulated to keep your chain running smoothly without attracting abrasive contaminants. Dry Lube looks wet when you use it, but then quickly sets with a wax like, synthetic film. It was created with a Teflon fluoropolymer which helps to repel moisture and therefore dust. It easily withstands rides up to 100 miles. And, even though it's designed for dry conditions, it will continue to hold up well if you're hit with a mid ride rainstorm. The Finish Line Dry Lube comes in a 2oz squeeze bottle and an 8oz aerosol.