Here are shown some cleaning facts on casters and foot prints.

Casters : within first 30 cms (diam 8 cms) we obtain a dramatic cleaning action on the casters’ surface….. is is suggested to complete 3 turns to get the caster cleaned 99% and weight is helping a lot in this action

Footprint : we suggest do make not less than 3 steps each legs, therefore total lenght of a mat should be not less than 3 linear meters