I bought one a couple of months ago. Quality is awful, the studs came out one of the plates so it just bent with no reinforcement at all. Sent it straight back.
A car? A house :D However in this application, I agree, if you feel you needed one you just go for a proper one rather than half baked one. I have one for snowboarding but rarely gets 'tested', normally a limb (includes head or butt) gets in the way and breaks the fall before the back.
Not going to lie, I didn't read the title before making my mind up what I thought the picture already was lol...
just my opinion but I wouldn't ever buy anything used thats meant to protect you just not worth the risk/savings when you cant guarantee its past even when it looks prestine/new
Crazy if you’d trust a £7 item to stop any major injury. But that’s my opinion