age aged aging cane crutch disabled elderly geriatric grandfather grandmother hand handicap handicapped limp old osteoporosis people person rehab rehabilitate rehabilitation retired retirement senior senior citizen sick stick therapy tired walking Weary aid assistance battery-life battery-operated charged crossing disability distance electric footpath gopher mobility mobility-scooter motion movement moving outdoors re-charged road senior-citizen silent tire tires transport transportation travel traveling travelling tyre tyres wheels bicycle bike crash helmet cycling cyclist energetic energy environmentally friendly fit fitness helmet on the move pedalling pedals pushbike safety safety helmet senior cyclist spokes white appearance artificial beard bearded chair christmas Christmas-trees culture eyes face Father-Christmas friendly glasses Kris-Kringle man man-in-the-red-suit Papa-Noel portly Saint-Nicholas Saint-Nick Santa Santa-Claus seated shopping-center shopping-centre Sinterklaas spectacles Weihnachtsmann