Bikes are great, practically the best mode of transport we have. They can take a lot, but do need maintenance and care. My own bike needed a new inner tube from a flat: turning it upside down revealed how mucky it had become on the underside. I’ll need to spring clean all our bikes again soon… Auto-generated description: A red bicycle is turned upside down with visible dirt on its frame and components.

Sebastian Abbott @doublebdoublet