I have now three belts of OP / Tech and am absolutely satisfied with each. The strap is well made, slip-proof and extremely comfortable to wear. For heavier cameras the neck of the photographer is the spared by the weight relief bring the OP / tech straps with itself. Thanks to the extensive accessories program of the OP / Tech you can adjust the belt as needed by various, available in different lengths interchangeable straps on each camera and use. The belt is extremely flexible to use. In my opinion it is because it is not very wide, ideal for light and medium cameras, especially system cameras with interchangeable lenses. For the heavy full-frame SLR with professional lenses, but I would recommend a different, wider belt of OP / Tech.