Built for lifters who want accommodating resistance for olympic bars, rehab work or mma training gym gear powerbands are seamless latex bands available across six thicknesses, so you can scale resistance from light mobility work through to heavy-duty strength support. Resistance range red 13mm, light resistance for mobility drills purple 28mm, moderate strength work green 44mm, balanced power and endurance training blue 64mm, heavy resistance for advanced training orange 83mm, maximum load and muscle building black 101mm, elite strength conditioning compatibility & use fits olympic, hex and ez bars for accommodating resistance on lifts attaches to power racks for assisted or resisted exercises can be used standalone or combined with free weights applications olympic weightlifting support and technique work mma training and conditioning rehabilitation and mobility protocols faqs which thickness should i start with lighter bands red 13mm, purple 28mm suit mobility and rehab work, while heavier bands blue 64mm and above are built for accommodating resistance on heavy lifts. Can i use these with my existing barbell yes they're compatible with olympic, hex and ez bars. Do i need a power rack to use them no they can be used standalone or combined with free weights, though attaching to a rack opens up more exercise options. Browse more studio accessories.