When high in the mountains, it is even more important to protect yourself efficiently against the sun. The TREKKER II trekking cap uses a light and breathable fabric providing UPF 40+ UV protection. The DRYNAMIC™ 4 WAY STRETCH material stretches in all directions in order to adapt comfortably and fit perfectly to withstand the wind. This flexible mountain cap folds into your bag when not using it. As well, the retractable neck protection rolls into a zipped pocket at the back. Feel confident to tackle the trails when the sun is out in force with the TREKKER II MILLET cap.