The On Cloudultra Peak is built for women going long on technical trails. A Matryx fabric upper is highly abrasion-resistant, breathable and hydrophobic, so it holds up to rock, scree and wet brush. Underfoot, the CloudTec cushioning system delivers stable runs over uneven ground, paired with a dual-density Helion HF and Helion foam midsole for energy return and added stability. The Missiongrip outsole handles durability, grip and traction. Features Matryx fabric upper - highly abrasion-resistant, breathable and hydrophobic CloudTec cushioning system for stable runs Dual-density Helion HF and Helion foam midsole for energy return and more stability Missiongrip outsole for durability, grip and traction Colorways APOLLO/ALOE BLACK/BLACK JUNIPER/BLACK Sizing Available in women&';s US sizes 5-11, including half sizes.