The Brooks Caldera 8 are designed to offer maximum comfort and protection on long mountain runs. Its DNA Loft v3 midsole and TrailTack sole guarantee stability, traction, and lasting comfort for demanding trail runners. The elevated adaptable upper features durable materials that resist scratching and snagging on the trails, as well as air mesh with breathable TPEE in the top layer to provide excellent ventilation and moisture management. Super-soft nitrogen-infused DNA LOFT v3 cushioning is super plush and stacked high to protect you from rough mountainous terrain, rocks, and roots for a comfortable long-distance ride. The raised sidewalls offer added security and flexibility where you need it, while the widened base and added flex grooves in the outsole work to stabilize your landings over rough terrain. This shoe is a certified Carbon Neutral product, achieved by increasing the use of recycled materials to lower carbon emissions and supporting carbon offset projects to neutralize remaining emissions.