Schwalbe Energizer Plus Performance Line Twin Skin Green Guard Tyre 27.5 x 1.75Schwalbe Energizer Plus Performance Line Twin Skin Green Guard Tyre 27. 5 x 1. 75 Specially made for E Bikes. The Energizer Plus has an ultramodern, dynamic touring profile with a smooth center section and strong diamond sides. It rolls easily on the road and has good grip, even on unpaved ground. The newly created Addix E Compound is specially optimised for maximum durability, low rolling resistance and exceptional grip even at high speed. The