Schwalbe Design Schwalbe have been leading the field in tyre development, making sure every cyclist gets the most out of their tyres, and that each tyre, road, gravel, MTB, trail, or DH is fit for purpose. Schwalbe have developed 4 different compounds, ADDIX, so riders can get the most out of their tyres in the Grip/Rolling resistance ratio and applied them to the appropriate tyres. Addix Speed (red identifier), perfect for race specialists, low rolling resistance, extended durability. Addix Speed Grip (blue Identifier), almost a universal compound, extended durability, enhanced grip, use for all mountain, trail, cross country. Addix Soft (orange identifier), impressive rolling characteristics, outstanding grip, damping and low temperature properties, use for demanding all-mountain trail, enduro, downhill and E-MTB. Addix Ultrasoft (purple identifier) provides maximum damping, grip and low temperature performance, use for hardcore enduro and downhill. Ultimate Gravity Tyre Schwalbes Magic Mary is the ultimate gravity tyre. Indisputably the favourite among Schwalbe Downhill and Enduro athletes, it has perfect all-round characteristics for almost all tracks and conditions. The sophisticated intermediate profile is combined with the best compounds and construction, pushing the limits to surprising levels. Bitey Compound, Bitey Tread Tread design has strong shoulder studs and aggressive, open tread design provide maximum braking traction and cornering grip even in extremely muddy terrain. Equipped with V-Groves specially developed for Magic Mary, every stud can bite into the ground for even more grip. Angled studs in the middle of the tread optimise the rolling characteristics. Magic Mary + Big Betty = Downhill Control Magic Mary works perfectly on the front wheel when combined with Schwalbes much-loved Big Betty on the rear.