For the best workout you could get indoors, Saris offers the Mag Trainer. Stick to your training plan and keep working hard when the weather outside isn't what you want, or when you want to get in an early training session before work. Saris' Mag Trainer allows you to turn your bike into your favorite indoor training tool that will keep you in shape throughout the off-season. And, we're loving the handlebar-mounted shifter that lets us change resistance during our workout easily so we can keep pedaling with confidence.