The Schwalbe Marathon Tires incorporate light-reflecting sidewalls for better visibility and also utilizes a Silica compound for easy rolling and longer life. - SmartGuard puncture protection to resist thorns, shards and even thumbtacks - Marathon Silica compound for easy rolling and longer life - Reflex sidewalls incorporate light-reflecting bands - Tire meets ECR R75 certification for e-bike use up to 50km/h