Sorry new at this, was recommended for me to improve my hip mobility. I look on WodLife. See many different colors what do you go for? http://thewodlife.com.au/products/twl-resistance-power-band-jumbo-yellow See the yellow is the most largest. To me one I used in this training facility I was at was, looking like the blue one. http://thewodlife.com.au/products/twl-resistance-power-band-extra-large-blue Thoughts?