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. These shoes are ideal for distance trail runners looking for protective comfort and feature a breathable performance upper with durable materials that resist scratching and snagging. The super-soft nitrogen-infused DNA LOFT v3 cushioning protects 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. The Caldera 8 is a certified Carbon Neutral product. Surface: Trail Shoe type: Neutral Usage: Long distance / Ultras Weight: 300 g Drop: 6 mm Midsole height: 38.5 mm heel / 32.5 mm forefoot Cushioning: DNA Loft v3 (nitrogen-infused foam) Lug length: 4 mm