The Lowa Ranger EVO GTX model is designed to carry heavy loads over long distances. Thoughtfully designed features, such as the 2-Zone lacing system and AY handy I-Lock lacing cam which allows you to separate the lace tension between the ankle and the top of the foot, will keep your feet comfortable over many miles of tough terrain. FeaturesIndependently adjustable lacing zones, on forefoot and upper, allow user to customize the lacing tension.Anatomically designed tongue with extra padding helps reduce pressure points on ankle.Asymmetrical upper design improves ankle flex for comfortable hiking.Metal eyelets with small rollers minimize friction and equalize tension.Upper design minimizes seams to prevent possible abrasion or pressure points.Closed camming eyelet at top of foot, secures lace tension in different zones.Metal stud works with laces, reducing unwanted tongue movement and pressure points.