Very durable, well-made, liked the heavy-duty rubber treads, very tactile steps so our Chocolate Labs  wouldn't slip, easy fold/unfold, useful integrated handle.  Everything about it was great and I would have kept it; however, it was just too heavy for me to transport daily from home-use to car-use.  Even my husband said to buy something else that's lighter weight so he purchased one, but that model had the "sand paper" tread.  We're still looking for a happy middle, a model that's light-weight but with the rubber treads. This model is a 5-star if I didn't have to transport it, kept it stationary at bedside, great for home-use.  It's also a 5-star for people who can handle the weight.