Our bikes are a classic city cruiser.  Fully adjustable so one-size-fits all: smart Chelsea Blue with cross-bar or bright Pillar-box red open-frame.   They have fat tyres and a big, sprung seat, providing a  very comfortable ride, whatever the bumps.   A smooth twist-grip  shifts a Shimano 3 speed rear hub.  There's a chain-cover, and bright chrome mud-guards hug the tyres, keeping you clean and dry whatever you're riding over.   And a strong rack over the rear wheel will hold a bag, as well as your D-lock.