With A-CS® Plus, the stretchability ratio provides 20% additional elongation, and the tear resistance is increased by 300% versus leather. Another benefit of using A-CS® Plus is that it offers high breathability with a lower weight and l The Tech-Air® Ready, GP Plus v4 Leather Suit is a complete revolution of the existing v3 model featuring an all-new construction including a blend of Flex Plus racing bovine leather, Alpinestars Composite Stretch Plus material, Matryx®, HRSF, an The GP Plus v4 is the perfect choice for sport and track riders looking for an upper mid-level suit with the latest material innovations. The GP Plus v4 features new Flex Plus race leather, specially tanned and refined in Italy, ultra-flexible Flex Plus race bovine leather that is highly adaptive to the body, supporting a 6% adaptability ratio which is 80% more than that offered by The Flex Plus leather with its high adaptability ratio ensures that the GP Plus v4 Leather Suit provides unrivalled comfort, feel, freedom of movement and precise fitment. Additionally, the Flex Plus race leather meets Alpinestars' Professional racing standard in terms of abrasion and tear resistance, while being 10% lighter than standard bovine leather.The GP Plus v4 also incorporates Alpinestars Composite Stretch