I own some goggles from another company. They are fine, but no replacement lenses. I finally got my aussie trained, mostly anyway, to wear them. He'll wear them on hikes, but will scratch them off if I leave him alone in the yard. Since he is no longer a threat to ruin goggles immediately, I shelled out the $ for these. He can't shake them off, but they do seem to bother him more than his other pair & tries to paw at them more. I think it is below his chin. They are fitted as well as I can get them, but I think the straps take up a wider area under his chin. I can't see how to fix this & feel bad for him. Another breed of dog may not have this issue. He has pannus, so I try to use them when I can. I like that I can buy replacement lenses and I trust that the clear ones, do in fact, have UV protection. He is often photographed when we are out and about, lol, quite the fashion statement. I feel their shipping is high and adds to the already high price of the goggles & lenses. I will wait for another sale to get more lenses. All in all, I recommend them.