Bangkok, Thailand June 2012. Crashing my Ducati Monster 696, on the road at 10pm with the speed about 100km/hr.
I had this Dainese back protector on inside my Alpinestar airflow jacket and Shoei Z6 helmet on.
The bike hit a pothole and shook me off and both myself and the bike slide about 10-15 m.
I did not feel a thing on my upperbody at all. I think it did the job pretty well. My knees got big hole and neede 9 stitches.
It's quite comfortable since I am only 5.2" and had to adjust it to shortest lenght.
It's a good price too!