It's sturdy, and great for my 23lb dog. I originally wanted 50ft, but 40ft actually works pretty well, in terms of distance. Would definitely buy another one of these!
Great product but my 10 pound dog has a bit of trouble moving around the full length because of the weight of the cord. Would be wonderful if they made one for dogs 15 or 20 pounds and under that was still 40 ft. I would buy that in a second.