The CycleOps Wind Trainer is ideal if you're looking for the simplest, most straightforward means to maintain your riding fitness in wintertime. The Wind is built using the most long-lived trainer technology out there: A weighted metal fan blade generates wind resistance as you pedal. The resistance is variable and it builds at a progressive rate with increased wheel speed. Just like riding on the road, gear down and you can spin on your rest days. If you want to suffer, grab the big ring and mash the pedals. At 30mph wheel speeds, the CycleOps Wind Trainer will generate in excess of 600+ watts of resistance. The Wind Trainer is foldable and stows away easily. The rubber coated base pads are adjustable to level out crooked basement floors. The quick release locking mechanism can be adjusted to accommodate both mountain and road bikes. One practical note: Compared to Cycleops' other trainer models, the Wind Trainer generates more noise when you're riding it. If keeping things quiet when you train indoors is a priority, you should consider Cycleops' other models. It comes with a Race Day Training DVD to help get you started.