adidas Running - Response TR X W (Chrome/Lilac/Aluminum 2) - Women's: Millions of satisfied trail runners cant be wrong. Generations of testing have refined the original, authentic trail shoe to the point of near-perfection. This is the trail shoe against which all others are judged. Abrasion-resistant textile and synthetic leather upper with 360-degree reflectivity for durability and low water absorption. adiPRENE + forefoot cushioning for greater push-off efficiency. Compression-molded EVA midsole for lightweight cushioning and 3-D TORSION SYSTEM for midfoot stability. adiPRENE insert under the heel for superior cushioning at impact. TRAXION outsole for maximum grip in all directions. Shoe weighs 12.8 oz.