I bought this for sport climbing because I wanted something comfortable. This harness lets me take a fast whipper without hurting my ribs like my Momentum AL harness did. This harness is heavier, but I don't notice that when I am wearing it. It is more durable than the BD Momentum AL harness I had before this one. One concern for me is that I have the leg loops on my medium harness adjusted almost as far out as they will go to accommodate my 24.25 inch (in climbing pants) quads. Be aware if you have massive legs. The only reason this harness did not get 5/5 is that the waist buckle should be a double buckle system. The one-piece design on this harness is a pain to deal with, especially when your forearms are fried from hours of climbing. The published sizing info is also off. My 33 inch waist is on the small end of the adjustments on a medium harness. A word on range of motion: I am very flexible and this harness does not restrict me at all, so don't be afraid of the wide belt, that is where the comfort comes from.