In reply to warren1989:
I haven't used singing rock harnesses for myself, but have used kids harnesses both at work and with my own kids. Decent enough kit.
My advice however would be not to buy a harness online or based on price only (if completely unfamiliar with the brand sizing etc). Get down to a quality independent gear shop and try on a variety, preferably getting to hang off a bolt in the shop (or something) whilst wearing it.
Comfort and safety tops bargain basement deals in my opinion.
Of course if you tried it and are happy, then jobs a good un