The straps are easy to attach to binoculars and easy to adjust once put on. The only suggestion I have is for there to be a way to attach you eyepiece cover to the straps. An extra ring or mini strap. Would definitely recommend.
Am using this harness for a Canon SX10, and it does the job preventing the camera from bouncing when walking. The tension of the elastic is pretty light, but as a female I find the side elastic a little uncomfy/annoying, hence four star over 5 star. It wasn't easy to get the loops hooked on the camera (as some reviews mentioned), but then again... it is never going to slip off, so you can use it with confidence.