adidas Kids - Response Trail J (Youth) (Light Granite/Aluminum/Mid Grape) - Kids' Shoes: The Response Trail, the original trail running shoe, hasn't been drastically changed or altered this season. It's just the annual evolution that brings it that much closer to perfection. Ultra-high-abrasion mesh upper. adiPRENE + in the forefoot maintains propulsion and efficiency. TORSION SYSTEM provides adaptive midfoot support. adiPRENE under the heel for superior cushioning at impact. TRAXION outsole for maximum grip in all directions.