The P Zero SmarTube EVO is Pirelli’s latest innovation in the world of tubes, designed to improve performance in modern cycling. Made of thermoplastic polyurethane (TPU), it can save up to 70% of the weight of ordinary butyl tubing and nearly 50% of pocket space, while being stronger than butyl as a raw material. P Zero SmarTube EVO rolls 5% faster than the standard SmarTube, making your bike quicker to accelerate and climb hills, while also improving handling.