norda and Envalior continue to push the boundaries of trail running performance with the launch of the 055 – the latest evolution of high-performance footwear powered by Envalior’s Arnitel thermoplastic copolyester elastomer (TPC) midsole technology.

norda 055 trail running shoe features Envalior’s Arnitel midsole.

Building on the success of the norda 005, the new 055 is engineered specifically for ultra-long-distance racing and highly technical terrain, combining enhanced cushioning and rebound with the lightweight durability and stability required by elite trail runners.

Arnitel TPC: High performance and comfort

Compared to conventional lightweight, high-rebound foams, Arnitel delivers superior mechanical property retention, consistent performance across varying temperatures and trail conditions, and long-lasting rebound performance.

The material’s low energy loss after foaming enables midsoles to maintain responsiveness and comfort across extended distances and challenging environments.

norda 055 for ultra running

The 055 highlights the versatility and resilience of Arnitel foam technology across multiple trail running applications. While the norda 005 was designed as the lightest and fastest trail racing shoe, the 055 expands the performance platform with a thicker Arnitel midsole for greater cushioning and protection during extended efforts on rugged terrain.

Demonstrating its performance in competition, ultra runner Rachel Entrekin recently won the Cocodona 250 race in Arizona in a record time, while wearing the 055 throughout the full 250 miles.

Rachel Entrekin wearing the new norda 055 during her record-breaking Cocodona 250 performance.

The launch of the norda 055 also coincides with Envalior’s introduction of next-generation Arnitel foaming grades developed to improve foam performance and expand processing capabilities for footwear applications.