Design: New TPEE air mesh is lightweight and breathable while remaining durable on the trails Improved upper features an external cage for a more secure, adaptable fit at the midfoot Strategically raised midsole foam walls offer added security and flexibility where you need it Widened base and added flex grooves in the outsole work to stabilize your landings and carry you smoothly over uneven terrain Made with recycled materials equivalent to 6 plastic water bottles In-Shoe Comfort: Ultra-cushioned for ultra-distances Super-soft, nitrogen-infused DNA LOFT v3 cushioning is optimized to be lightweight, responsive, and durable for plush comfort Durability & Traction: Forefoot outsole design uses biomimicry of a mountain goat to enhance control and stability on uneven terrain TrailTack Green outsole provides traction on wet and dry surfaces and is made of 25% recycled material Additional Details: Weight: 9.4 oz / 266.5g Midsole drop: 6mm Brooks Women's Caldera 7 Trail Running Shoes