Volummy TireDescription Sim Works goal was to make a tubeless tire at this time. They had tons of requests from our customers at NAHBS 2017. By researching the market, they put all those voices into the design. As you can see on the side of the tire, it shows the words of Tubeless Compatible. On the sidewall, we use gumwall material. Since most of the people who do bike touring told us, We have problem with a usual tire that the sidewall gets torn up easily. We