Willy, a backless stool that causes you to hold a correct posture to avoid painful backache; with sitting without lining and seams of sorts in the more total respect for hygiene. Structure consisting of a pentapod base in chromed steel with swivel wheels, adjustable gas column with cover telescopic of the gas pump. It is supplied with or without footrest ring in chromed steel. Polyurethane seat expanded anthracite gray color.