The Yeti X range now includes the Yeti X distance, both built for trails and difficult running conditions. The lacing is designed to provide good foot security against lateral movement as do the non-slip footbeds. The Yeti X and Yeti X distance are not recommended for road running although as a leisure item there's no reason why anyone should not enjoy these sandals. The Yeti X's offer a midsole "damping" layer providing comfort while the "distance" model includes a 5mm rock protection layer to guard against stony perturbations. This protects the foot on ultra trails.