The 001A Serpentine is an ultra-distance running shoe engineered for runners who log serious mileage. At its core is an all-new Arnitel® midsole, a high-performance thermoplastic elastomer that delivers responsive, long-lasting cushioning across extended efforts. Designed to maintain comfort and energy return mile after mile, it suits both road and mixed-surface ultra running.
Arnitel® midsole for optimized cushioning and durability
Built for ultra-distance running
High-performance thermoplastic elastomer construction
Designed for sustained comfort over extended mileage