Yeah was glad i was wearing my wrist protectors, trying to race my dad while i was on the powerisers on concrete was a bad idea at this stage
flat on my face but luckily the wrist guards did their job and all was good.
Unfortunately can't help you with where to get some reasonably priced as mine were a birthday present with my powerisers (else my mum would have had kittens
)
Hope you find some soon before you need them.
Ben