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. 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