Question: what has umpire got on his arm?
Answer: Umpire Bruce Oxenford has debuted the latest innovation in umpire safety in Australia's World T20 warm-up: a forearm shield. ... Looked to be made of clear Perspex, the shield is strapped to Oxenford's non-dominant signalling arm, and can be used to parry and block shots fired back in the umpire's direction.