Aeron Chamber with Schrader Valve ExtraLite Protect

* Protection level 2: Extremely low rolling resistance, ultra-lightweight and puncture-proof - ideal for competition and performance * Up to 82% lighter than a comparable butyl inner tube: a world-class performance! * Significantly better rolling characteristics than butyl, making it suitable for competitive cycling and high-level biking * Ultra-compact size. Ideal as a spare inner tube for cyclists using tubeless tires, as it fits in even the smallest tool or jersey pockets. * Multi-layer construction * Aluminium valve