To celebrate the release of Shifting Sands, the third episode in the Pertex Elemental Journeys Series we're giving you a chance to win a Agravic Alpha Hooded Shield Jacket from our partner adidas TERREX.

"The Agravic Alpha Hooded Shield Jacket is designed to keep you going, whether trail running, mountain biking or climbing. With a hybrid construction, it offers more protection than your average wind jacket. The outer layer is made with durable Pertex® Quantum fabric, while the front is insulated with Polartec® Alpha for warmth in low temperatures. The jacket packs into itself for easy storage, and features two zip pockets for securing your belongings."

Find out more about the Pertex Elemental Journeys Series here.