Amazon.com : catazer 20Inch Bicycle Solid Tire 20 Inch Non-Pneumatic Airless Non InflationTire Do Not Need Tube 20x1.5/1.75/1.95 (20X1.5/1.75/1.95) : Sports & Outdoors
A flat tire is a thing that can ruin even the best bike trip. However, riders can forget dragging around their patch kits and pumps, because Nexo created an airless tire to ensure they keep pedaling.
These homemade airless bike tires are so cool!
These have been around for a while, and you can get some on Amazon.
With #airless tires technology, you never have to worry about your bike tires going flat again.
https://www.boredpanda.com/airless-flat-free-tire-bike-nexo/