Sludge road sealant was designed specifically for road bikes with Presta valves. This product contains micro-fibres to allow the sealant to pass through the valve. It will help to prevent and repair flat tyresa. This can be used for mountain bikes that have a Presta valve, but it will only work for small punctures like thorns.
The 100ml bottle will do two road wheels or one mountain bike wheel.
The 200ml bottle will do four road wheels or two mountain bike wheels.