There is not much to tell from a picture. With manufacturer name & model/type, you could look up material and standards/specifications for protectors.

Anything that fits and has some abrasion protection material will help to keep your skin on your body during a slide. Protectors will distribute impact force to a larger area to somewhat soften impacts which can help prevent bone fractures.

So if it has some protection features and you did not have anything before, it’s good to have.