The On Shoes Cloudultra 3 Trail Running Shoes is a hard-hitting trail running shoe delivers high energy return and impressive cushioning - even hours into your mission. Engineered to go the distance during 6+ hour trail runs. With an updated Missiongrip outsole, redesigned using FEA (Finite Element Analysis) for high performance on technical terrain. Plus Helion HF hyper foam for powerful energy return. | On Women's Cloudultra 3 Trail Running Shoes