Jet Black Z1 Pro Fluid Trainer The JetBlack Z1 PRO Fluid is an award winning trainer and like all JetBlack trainers, comes with a lifetime warranty. Folds into compact shape for easy storage and transport. Lowest profile of any trainer Multiple coaching sessions crafted by Olympic cycle coach Murray Healey Award winning trainer Up to 40% more slimline than competitor trainers Folds into compact shape for easy storage and transport