ZEUS Running Mountain full soles made from SBR rubber with ONE GRIP® technology that offers new properties to conventional rubber sole units, increasing their flexibility, adherence and durability. Thanks to constant R & D studies, we have developed ONE GRIP® that guarantees never seen before benefits. By manipulating the rubber elastomers we have altered the natural values assigning new quality levels that are much better than the minimum standards. With this technique we managed to increase + 22% flexibility + 17% durability and + 25% adherence. Technical Data: Density: 1.13-1.15 gr/cm3, Abrasion: 90-100 mm3, Hardness Shore A: 70 ShA