When every gram counts and rolling resistance matters, we reach for the Pirelli P ZERO SmarTUBE EVO. Designed for high-performance road cycling, this next-gen inner tube is crafted from thermoplastic polyurethane (TPU), cutting weight by up to 70% compared to traditional butyl tubes-all while delivering superior puncture resistance and airtight performance. Perfect for race day or elite training setups, the SmarTUBE EVO keeps things light, fast, and incredibly compact. It packs down smaller than a standard tube, saving precious space in our saddle bag or jersey pocket. Optimized for disc brake setups and compatible with wider tire profiles, this is our go-to tube when we're chasing PRs or building the fastest rig possible.