Engage in the world around you. In these adidas by Stella McCartney trail running shoes, that’s even easier to do. They’re mindfully designed for you to connect to nature and connect with yourself. Terrex tooling on the durable rubber outsole keeps you upright and pushing forward on unpredictable, uneven terrain. And since you keep going even when the temperature drops, COLD.RDY technology offers insulated warmth, holding in heat and helping you stay dry when you get out there.This product is made with Primegreen, a series of high-performance recycled materials. 50% of the upper is recycled content. No virgin polyester.