Bigger is better. This is especially true if you want to ride in deep snow or loose sand. The Jumbo Jim is designed to to thrive in these conditions with it’s large volume casing combined with extremely low air pressures.

• Bigger is better. This is especially true if you want to ride in deep snow or loose sand. The Jumbo Jim is designed to to thrive in these conditions with it’s large volume casing combined with extremely low air pressures.