The durano has a completely redesigned dynamic tread & is now ten grams lighter. The outstanding qualities, such as the extremely high mileage, remain the same. The dual compound ensures optimum adhesion, even on wet training stretches in winter. The raceguard protection belt, with a double layer of nylon fabric, provides well-proven puncture protection for light sports tyres. At schwalbe, the abbreviation dd stands for double defence. In addition to the raceguard protection belt, a layer of snakeskin fabric strengthens, in particular, the shoulder & side wall of the durano dd ensuring all-round protection combined with minimum additional weight. The snakeskin fabric is new. Now, a monofilament fabric is used that provides even better cut resistance & greater snakebite protection.