Just been window shopping and came across this on the gardiner site
"Hazard Yellow Pole Hose 8mm OD
Recently a window cleaner was succesfully sued for using clear pole hose. This led to a serious trip injury and subsequent litigation. Despite having warning signs placed it was decided by the court that using clear hose represented an avoidable danger to the public. Because of this we now supply all of our water fed poles with 'Hazard Yellow' pvc hose - still lightweight and flexible just in yellow. We are also able to supply this in 30m lengths or by the metre."