It's sensible. The adjustable parts stay put once you adjust them, and the attachment loops are easy to use. Once you've managed to adjust it to the right size, it is reasonably difficult for a puppy to get its mouth around, which is also nice. The only okay color is the red; I wish these sturdier harnesses came in bright, obnoxious colors like the lightweight harness!! Some of us aren't into the whole "mature, muted tones" thing (or traffic-cone orange, which is such a boring, entry-level bright color that it frankly does not count; at least combine it with teal, or something). Either way, though, it functions well.