2x Tufo Comtura 4TR 700 x 25c. The Tufo Comtura 4 TR is well protected against punctures by’Vectran’ under the tread area. With great ride comfort and excellent mileage the 4 TR is the holy grail for every tubeless fan, from training miles to the toughest races. Handmade in Czech Republic, EU. Puncture resistant Vectran protection. Supple 127 TPI casing. We use this high performance road racing tread compound in the majority of our road tubulars and road tyres. With 66 Shore A hardness this well-balanced blend of synthetic and natural rubbers with Activated Silica filler provides tubulars with excellent wet grip and low rolling resistance. This most effective anti-puncture system is placed directly under the tread area. A core of the anti-puncture system is made from Vectran – liquid crystal polymer (LCP) fibres which are five times stronger than steel. Vectran offers outstanding cut resistance and high impact resistace at a low weight – highly demanding properties for high-end bicycle tyres. Vectran not only provides the best possible puncture protection but also ensures cornering and stability. Compared to the Pirelli, we see much stronger performance in the “performance” tests, and we see the Comtura 4 TR as a good option for those looking for improved puncture resistance but still value performance.