- Alternative choice for rookies. Tough Tom is a new addition, and adopting the previous Nobby Nic profile. It's the right choice for rougher trails or for the front wheel. **Features:** * PROTECTION: K-Guard - a layer of natural rubber, reinforced with Kevlar fibres * SIDEWALLS: LiteSkin which offers light, thin sidewalls, for weight saving and reduced rolling resistance * COMPOUND: SBC (Schwalbe Basic Compound) a versatile quality compound for all applications * TPI: 50 TPI * WEIGHT: 29"x2.25 795g