The RIBELLE RUN KALIBRA G is the trail running shoe for mixed terrain and extreme conditions, when cold, snow and mud demand greater protection and enhanced reliability.Suitable for medium-distance training, in winter or in summer on softer, more technical mountain terrain.The cutting-edge feature of this shoe is the Wrap360 Lace System, developed in collaboration with BOA®, that allows a complete wrapping of the foot, both on the front and heel areas.