The Schwalbe Jumbo Jim Fat Tyre proves that bigger is better. This is especially true if you want to cycle in deep snow or loose sand. In these conditions only large volume combined with extremely low air pressure can help. Schwalbe's Jumbo Jim Fat Tyre is an extremely light-bike Fat Tyre. In the usual Fat-Bike 4 inch width, it weighs approximately 1050g. Schwalbe Jumbo Jim Fat Tyre Specifications LiteSkin Compound: PaceStar  Size: (26 x 4.00) SL XC Stud pattern Addix SpeedGrip Weight: 1050g Colour: Black