Everything you need to start training with power in one package. The best-selling trainer in history paired with the first ever heart rate based power meter! The Ultimate training kit at an ultimate value along with Lifetime warranty The new Fluid 2 Trainer: New Resistance Unit Clutch know ensures optimum tire/roller engagement every time you ride! New spring loaded skewer clamp for secure bike engagement New leveling feet & now fits 29ers No adjustment needed, flexible fluid resistance achieves ideal power to speed ratio Flywheel precision balanced for inertia & acceleration Matte black frame!