The durano is the most popular road tyre from schwalbe for long distance riders the new folding durano dd double defence model has been designed to ensure all round protection with minimal additional weight it features the raceguard protection belt as well as a layer of snakeskin fabric which strengthens the shoulder and sidewall of the tyre and a monofilament fabric has also been used which allows for a greater snakebite protection available in 700 x 23c or 25c only