This 5-year old boy needs a constant oxygen supply. At home, he is connected to the supply via a long tube but the portable supply he had was too heavy for him to carry and he needed the constant attendance of a carer.
The portable supply was mounted on a child-sized trolley like a miniature golf trolley and secured with two Velcro straps. The handle is telescopic so that on family outings dad can take over when the client loses interest in using the trolley.
He is now free to walk to school with his friends. A sturdier trolley had to be made to take the punishment of a child bumping over kerbstones.