@jimmbaird The Tacx Flow trainer will work with most bikes with a quick release rear axle with a width between 130mm to 135mm.  The specifications on Giant's website for the 2020 Roam 3 Disc do not give the rear axle specifications, however because many fitness bikes and hybrid bikes fall within this rear axle width, the trainer will most likely work with your bike.  You can also bring your bike to your local REI bike shop and ask them to verify the rear axle spacing on your bike.

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