Introducing the California Fitness Malibu 6 Heavy-Duty Folding Treadmill - our heaviest-duty folding treadmill in the lineup.  Get in the groove of your workout with the built-in premium speakers, just plug your phone into the USB port to play your favorite music. It’s just plug and play! This is the treadmill that will make you want to quit your expensive gym membership to start getting after it in your basement. The M6 Heavy-Duty Folding Treadmill by California Fitness provides one of the highest quality treadmills for the price anywhere. If you need a budget-friendly treadmill that’s easy to fold-up in limited space, the Malibu 6 should be right for you.