Not durable.
This is significantly larger than most adjustable adult collars, and after having it on for only a half hour, the Velcro that the strap attaches to came off. Not nearly as good as the ones we used to keep on the ambulances. (I’m a former EMT in one of the busiest jurisdictions in the country, just for some perspective.) I’m really only giving it two stars because it’s nice to see one in olive drab instead of blue and yellow.
Rating: 2 stars