The adidas Terrex Swift R3 combine the lightweight design and cushioning of a trail running shoe with the versatility and stability of a mountaineering boot. This shoe is equipped with ultra-lightweight Lightstrike cushioning for trail running. Designed to give you extra cushioning and speed. A new way of designing hiking shoes. The Pro-Moderator component in the Terrex Swift R3 provides lateral stability and protects the midfoot from excessive wear on long trails.