They are the result of our development for World Tour tubulars, now made available for everyday rides with clinchers. 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. P ZERO™ SmarTUBE EVO comes with a Presta valve, available in a full range of valve heights to fit every rim.