The Schwalbe Marathon Plus HS 440 Bike Tire is one of the most puncture resistant pneumatic tire. It features superior puncture protection and many other inner values such as rolling resistance, recycling, and Anti-aging side wall. Providing excellent quality for intensive use, this Marathon Plus tire is the best choice for E-Bikes. Its robust construction that handles almost any mistreatment makes this bike tire ideal for all your adventurous trips. Puncture-Resistant Construction. This bicycle tire is protected by SmartGuard, making it one of the most effective puncture resistant belt for bicycle tire. A substantial, 5 mm thick layer of flexible, special India rubber offers durable protection and provides rolling resistance. Also, a proportion of recycled rubber from old latex products is used in the construction of this tire. The Anti-Aging side wall offers more durability to the tires as they last much longer before developing unsightly cracks when subjected to use with insufficient air pressure.