The Grand Prix 4-Season is a reliable companion for training rides and in competition, come rain or shine, featuring superior durability that's ready for any season. Designed to wear longer and offer improved traction in harsh conditions and lower temperatures. Vectran Breaker is spun from liquid crystal-polymer to create a multiple-thread thermoplastic yarn. This partially crystalline fabric is more cut-resistant than aramid and its tensile strength is five times higher than that of steel. A Vectran Breaker is lighter, more flexible and effective against cuts than a comparable nylon breaker, without affecting rolling resistance. Duraskin provides a cut-resistant layer from bead to bead.