Schwalbe's first tyre specifically developed for the E-MTB - for All Mountain, Enduro and Gravity. Front 29 x 2.4 inches, rear 27.5 x 2.8 inches is the perfect combination. The two tyre sizes combine their attributes as part of a coherent overall concept. The blocks are about 20 percent larger than on the Magic Mary, for example. This results in greater stability, more traction and longer durability.