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    Muscle Building Set


    PLEASE NOTE: All visitors to this site are advised to consult their physician before beginning any exercise and/or nutrition program. Undersun Fitness and the contributors do not accept any responsibility for injury sustained as a result of following the advice or suggestions contained within the content of this site.

    Resistance Bands Sets and Bundles come with a 5 Year Limited warranty. You can learn more at

    Digital Program are valid for one year after purchase. For more information please contact

    Customer Reviews
    5 Based on 2 Reviews
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      Derek P.
      United States United States

      Amazing sweat and pumps!

      I’ve followed James for years and years. Through my time competing in bodybuilding, hitting the weights for 10 years straight, and teaching advanced fitness courses at the high school, this was an amazing addition to the minimalist ideas we talk about for functional longevity. I was wondering how these bands could compare. After the first couple of workouts, the lasting pumps, the injury prevention, and the function behind them. Absolutely incredible. Well done, Mr Grage and thanks for bringing this into our homes and into the homes of my students!

      United Kingdom United Kingdom

      Your resistance bands ( Under sun)

      I love the way it helps me to Exercise.i am aged 83 with a number of health Issues. They work my muscles well I can take them Anywhere . Thank you for your support network and James exercise videos .thank Jennifer for her Support and encouragement