Green Compound Pads For cross country riding this is your best choice and is a British made organic pad compound that will not damage your discs. The pads have a medium lifetime and most types are supplied with slightly beefed up retraction springs to prevent pad drag. For downhill racing or longer life in wet and mud see either the RED or GOLD grades.   Features Designed for X-country riding. Softer pad compound for better stopping. Can be used on non-hardened or hardened discs. This is a RESIN pad.   Red Compound Pads For downhill use the RED grade has a higher heat threshold but has the added benefit of not overheating the brakes with excessive heat transfer which would cause softening of your brake lines. Lifetime must be evaluated, these pads are designed for a few descents only, check wear after every ride to avoid running out of brakes. Supplied with heavy duty retraction springs in spring based systems.   Features High friction pad for downhill riding. Handles more heat under heavy braking. Minimum heat transfer to hydraulics. Can be used on non hardened or hardened discs. This is a RESIN pad.