GP Plus v4 Leather Suit - Black/Red Fluo/White - US 48 / EU 58 GP Plus v4 Leather Suit 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, and GP DFS sliders perfect for the sport and track rider 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, ultraflexible 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 regular bovine leather, the result means that the GP Plus v4 Leather Suit provides unrivalled comfort, feel, freedom of movement and precise fitment 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 With A-CS ® Plus, the stretchability ratio provides 20% additional elongation and tear resistance is increased by 300% versus leather The GP Plus v4 also incorporates Alpinestars Composite Stretch Plus, A-CS ® Plus, material on the suit’s side torso and shoulder blades, offering lower weight, and increased flexibility and freedom of movement Perforation of the Flex Plus race leather is provided all over the upper chest, abdomen, and thighs The GP Plus v4 also incorporates strategically placed lightweight and breathable Matryx ® material panels on the suit’s torso for optimal ventilation, especially when the suit is worn with Tech-Air ® Airbag Systems like the Tech-Air ® 10 or 5 Another benefit of using A-CS ® Plus is that it offers high breathability with a lower weight and lower profile than leather accordion paneling As for other construction features, the GP Plus v4 has HRSF stretch inserts in the crotch, back of legs, inner arms, and pectoral areas The suit also incorporates GP DFS shoulder, elbow, and knee sliders for protection Sporting soft stretch wrist and ankle cuffs the suit also has and a detach - able comfort liner with biostatic Polygiene ® treatment to keep it feeling and smelling fresh Providing the GP Plus v4’s impact protection, race-proven GP-R elbow, forearm, knee, and shin armor, and Nucleon Race shoulder armor are incorporated in the suit For the ultimate in rider protection, the GP Plus v4 is also fully Tech-Air® Ready for use with the Tech-Air® 5 or Tech-Air® 10 Airbag Systems and provides a convenient pocket on the forearm for the Tech-Air® 10’s remote LED panel