It's small, it's round, it's eerily brown. It also took me over an hour's wait to get these. Thanks, NHS.
Still, they stop my back pain, for a while at least. I would have some nice pain killers, but apparently if I compound them with the pain killers I already have I'd pretty much fall asleep. But these will do I suppose. They seem to do the trick.
My rating: 4/5